A ______ is a circular band of muscles designed to prevent movement into or out of a body cavity or organ. Multiple choice question.

Answers

Answer 1

Answer:

sphincter

Explanation:

circular muscle that normally maintains constriction of a natural body passage or orifice and which relaxes as required by normal physiological functioning.


Related Questions

According to the body-cover theory of phonation, which part of the vocal fold is not considered to be a portion of the cover

Answers

Answer: B. Thyroarytenoid muscle

Explanation:

The options include:

A. Epithelium

B. Thyroarytenoid muscle

C. Superficial layer of the lamina propria

D. Intermediate layer of the lamina propria

The cover-body theory of vocal fold vibration was published by Hurano in 1974 and he described the morphological structure of the vocal folds. He also divided them into the body and cover layer biomechanically.

The main substance of the vocal fold is regarded as the thyroarytenoid muscle. The muscle provides most of the mass of the vocal cord.

Tom is having difficulty dorsiflexing and inverting his right foot. Which muscle is most likely involved in this problem

Answers

Answer:

It should be the tibialis anterior

Explanation:

I hope this helps!

which on is viviparous :
a. shark b. frog
c. Whale d. lungfish​

Answers

Answer:

whale

Explanation:

because they give direct birth to young ones

What about cellulose makes it ideal for structural support?

Answers

Answer:The answer would be D!

Explanation:

A hydrogen bond is one of the strongest molecular bonds. :)

Cationic detergents are surface active agents, also known as ______, which damage bacteria by binding bacterial surface proteins and disrupting ______.

Answers

Surfactants; cell membrane

The outer planets are made mostly of gas which makes them

Answers

Answer:

The four outer planets are all gas giants made primarily of hydrogen and helium. They have thick gaseous outer layers and liquid interiors. The outer planets have numerous moons, as well as planetary rings.

Carryonlearning

Which of the following statements is false?
А) Glucose molecules are the basic units of cellulose
B) Glycerol is a basic unit of oils.
C) Simple sugars like glucose are the basic unit of fats.
D) Amino acids are basic units of proteins.

Answers

The answer is b I’m not sure I think
The answer is B (Glycerol is a basic unit of oils)

Which method of waste treatment is LEAST harmful to the environment?​

Answers

Answer:

c

Explanation:

because burning burying and landfill are all harmful

Multiple Choice Questions.
1. The leaf is attached to the stem at
(a) Petiole
(b) Node
(c) Spine
(d) Internode​

Answers

Petiole, hopefully this helps you

which anwser choice best describes a community

Answers

Answer:

Community Definition. A biotic community, also known as a biota or ’biocoenosis’, is the group of organisms that live...

Types of Community. There are two main types of community. A major community is the smallest ecological unit which is...

Characteristics of a Community. The features within communities are highly variable, and there are a number of

Explanation:

Which is found in both DNA and RNA?
A. thymine
B. uracil
C. adenine
D. ribose

Answers

Answer:

in DNA it is deoxyribose and in RNA it is ribose

Answer:

C. Adenine

Explanation:

DNA and RNA both have adenine, guanine, and cytosine.

DNA has thymine, which RNA does NOT have.

RNA has uracil, which DNA does NOT have.

ILL GIVE BRAINLIST PLS HELP!!!!!!!​

Answers

Explanation:

The answers to number 10 are

I for homeostasis

B for metabolism

B for biosphere

E for ecosystem

I for system

E for biology

the answer to no. 11 are

B for biodiversity

B for metabolism

G for organism

G for biosphere

I for cell

I evolution

hope it helps

For a reaction, A H= 2 kJ. For which value of TA Sis the reaction spontaneous?

Answers

Answer:

option a is the answer I think so

Answer:

option a

Explanation:

For which value of TA Sis the reaction spontaneous?

Select the correct locations on the image.
in which four locations do hurricanes occur?


Answers

Answer:

Explanation:

Hope that helps                                      

B.Fill in the blanka with the correct word given inside the box.


clay. water. sticky. loam
oxygen. sand. plants. particles
7.________ is made up of particles that are tightly packed together.
Very fine 8._________ of rocks can hold much water and become 9._________
when wet.While 10.________ is a mixture of sand and clay,this contains the right mixture of particles of silt,sand and clay.​

Answers

Answer:

7=clay

8=loam

9=sticky

10=loam

the basic structural and functional unit of the living organism is​

Answers

Answer:

cell

Explanation:

The cell is the fundamental unit of structure and function in living things. All organisms are made up of one or more cells. Cells arise from other cells through cellular division.

What is produced/made when our food is burned?
___+___+___

Answers

Answer:

it should be ( carbon dioxide, oxygen, and energy

Explanation:

Explanation:

Oxygen /carbon dioxide and energy

This is the process happens continuously inside our body .This is called respiration

The transcription of genes in E. coli that lack a termination sequence require _______ factor to terminate transcription.

Answers

Answer:

rho

Explanation:

The Rho factor is a prokaryotic helicase protein that acts in bacteria to mediate the process of termination of transcription. In Escherichia coli, the Rho factor is a hexameric ring-shaped helicase and each subunit of this factor contains two domains involved in RNA binding and ATP hydrolysis. The Rho factor binds to the transcription terminator site on single-stranded RNA and then continues along the messenger RNA (mRNA) strand until it reaches the RNA polymerase, subsequently triggering its dissociation from the DNA and thus the termination of transcription.

During pulmonary ventilation, relaxation of the diaphragm and external intercostals ________ and air flows out of the lungs. increases the pressure in the thoracic cavity flattens the floor of the thoracic cavity increases the volume of the thoracic cavity expands the rib cage stimulates the phrenic nerve

Answers

Answer:

Increases the pressure in the thoracic cavity

Explanation:

During pulmonary ventilation, relaxation of the diaphragm and external intercostals increases the pressure in the thoracic cavity and air flows out of the lungs.

Pulmonary ventilation involves the exchange of air in the body. The exchange mainly takes place between the lungs and the the blood. When the lungs take in oxygen it distributes it to other parts of the body after which the byproduct is expelled in the form of Carbon dioxide.

The diaphragm and intercostal muscles are found close to the chest(thoracic) region such that when air is expelled it produces a similar effect such as relaxation of the diaphragm which also makes the chest muscles go down and exert pressure. This mechanism aids the expulsion of Carbon dioxide from the lungs.

Select all that apply.
Which of the following are correctly spelled plural forms?
mongoosen
u mongooses
bluffs
bluffes
knifes
knives

Answers

Correctly spelled plural forms are mongooses, bluffs and knives.

Answer:

Mongooses Bluffs and Knives

1 poi A student draws a diagram of a plant cell. The diagram is 40mm in width. The plant cell is 0.02mm in width. What is the magnification of the student's drawing? A. 0.005 B. 0.08 C. x200 D. x2000 ​

Answers

Answer:

D. x2000

Explanation:

magnification = image(drawing size)/actual size

magnification = 40/0.02

magnification = x2000

The magnification of the diagram is x2000. So, the correct option is (D).

What is Magnification?

Magnification is the process of magnifying something. It enlarge the apparent size and not the physical size. This type of enlargement is certainly quantifiable. It also refers to the action of visually enlarging an object with the help of lenses.

This concept exist in two forms-

1. By microscope

It makes small objects appear large

2. By telescope

It makes a distant object which appear closer and the images are more clear and defined.

The formula of magnification represents the ratio of the height of the image to the ratio of the height of the object.

Magnification = image/actual size

For given example, magnification = 40/0.02

magnification = x2000

Thus, the magnification of the diagram is x2000. So, the correct option is (D).

Learn more about Magnification, here:

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HELP PLEASE !!!!
Which statement best describes the relationship between an allele's frequency and its dominance?
o Frequency and dominance are the same thing.
A dominant allele always has the highest frequency.
A dominant allele usually has the highest frequency.
o Frequency results from environmental stresses, not dominance.

Answers

Explanation:

Frequency and dominance are the same thing. A dominant allele always has the highest frequency. A dominant allele usually has the highest frequency.

Glucose molecules provide energy to power the swimming motion of sperm. In this example, the sperm are changingA) chemical energy into kinetic energy.B) chemical energy into potential energy.C) kinetic energy into potential energy.D) kinetic energy into chemical energy.E) kinetic energy into thermal energy.

Answers

Answer:

A

Explanation:

The correct answer would be that the sperms are changing chemical energy to kinetic energy.

In order to power the movement of the sperm cells, chemicals in the form of glucose molecules are hydrolyzed and the resulting energy from the reaction is used to power the movement of the sperm cells.  Moving sperm cells possess kinetic energy. Thus, we can say that the chemical energy in the glucose molecules is converted to kinetic energy in the sperm cells.

The correct option is A.

Which is a property of every homogeneous mixture? Each part of the mixture has the same appearance. The mixture is made up of a solid dissolved in a liquid. The characteristics of the mixture change within a single sample. The components of the mixture change within a single sample.

Answers

Answer:

Each part of the mixture has the same appearance.

Explanation:

Homogeneous mixture consists of substances that mix evenly. Therefore has same appearance.

Match the type of ELISA with what it is used to detect. Question 2 options: detects presences and concentration of antigen/protein detects presences and concentration of antibody 1. indirect ELISA 2. sandwich ELISA

Answers

Answer:

ELISA is a technique of enzyme linked immunosorbent assay.

Explanation:

The full form of Elisa is enzyme linked immunosorbent assay. The ELISA technique is a boichemical technique that is used to measure the amount of protein or the antibody in a solution and is divided into three types :

Competitive ELISADirect ELISA or Sandwich ELISAIndirect ELISA

1. Indirect ELISA ---  detects the presences and concentration of the antibody.

2. Sandwich Elisa or Direct ELISA  ---  detects the presences and concentration of the antigen/protein.

Part Two: Position Paper What's your position about building roads in the rainforest? Write a paper that explains your position. Use facts from your research to support your position. How would humans and different parts of Earth be affected by the construction? Is there any argument against your position?

Answers

Answer:

We should not be building roads in the rain forest. Some reasons behind this include trees produce oxygen, animals leaving their natural habitat would not survive, and it would only increase pollution. Research states that if pollution increases any more, the Ozone protecting us will deteriorate. Other research states that if animals lose their natural habitat and have to adapt to a new environment, they are not very likely to survive. And not surviving means that the food chain will break, affecting everything above it, and that could also include us. This concludes why we should not build roads in rain forests.

Explanation:

Sorry if its short, but here <3

No roads should be build in the rainforests.

What do you mean by rainforests?

"A luxuriant, dense forest rich in biodiversity, found typically in tropical areas with consistently heavy rainfall."It's a moisture dependent vegetation.Why no roads?To build a road a vast area full of vegetation will be cut down.This will adversely affect the climate and habitats of organisms living there.This will also result in scarcity of rainfall.This results in interference of humans on the habitat of that area.

Hence, building of road should be avoided in rainforests.

To learn more about rainforests here

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Which of the following is an example of the endocrine system maintaining homeostasis?

1. Detecting a pain stimulus and sending a signal to the spinal cord to perform an automatic response
2. Discharging an excessive amount of hormones in the blood and not sending a signal to stop production
3. Sending a message to the pituitary gland to start producing a hormone when the levels in the body are too low
4. Using sense organs to get information about the outside world and direct an appropriate body response release

Answers

Answer:

The correct answer is "C".

Homeostasis is the maintaining of stable internal conditions in the body of a living being, such as body temperature or heart rate.

The endocrine system is an organ in the body which is in charge of secreting hormones that regulate numerous functions in the body, including metabolism, growth, sexual function, sleep, and mood among others. It is an essential organ which contributes to the state of homeostasis in the body.

Explanation:

Answer:

The answer is C

Explanation:

I took the test!! :)

what is cell wall ?

please help.​

Answers

Answer:

A cell wall is a structural layer found just outside the cell membrane that surrounds various types of cells. It may be robust, flexible, and even stiff at times. It functions as a filtration mechanism as well as providing structural support and protection to the cell.

write in short about medical occupation​

Answers

A vocation characterized by a specialized body of knowledge of medicine that its members must teach and expand, by a code of ethics and a duty of service that put patient care above self-interest, and by the privilege of self-regulation granted by society.Occupational medicine (also known as “occupational health”) is focused on the treatment of work-related injuries and illnesses. Physicians trained in occupational medicine diagnose and treat work-related injuries much more effectively than most primary care physicians.

the most common mineral group is broken into the subgroups of ferromagnesium and non ferromagnesium

Answers

Answer: The answer would be Silicate

Explanation: They are made out of silicon and oxygen

Other Questions
1. How much heat energy ( Q ) is required to heat 2.0 kg of copper from 30.0 oC to 80.0 oC? Simplify (Asap )please answer this if you know(full steps required )(please no spam answers) READ chapters 10-12.There are multiple themes addressed in Lord of the Flies. Of the 4 listed here, which do you think is the most important, and how is it brought out in the novel? What do you think William Golding wanted the readers to learn by including this particular theme? Write a two-paragraph essay using specific examples from the text to tie into the lesson learned. You will be graded on Focus, Content, Organization, Style, and Conventions (4pts each); so please do your best work.1. The importance of Civilization over Savagery2. Loss of innocence3. Mans inhumanity to man4. Fear is all controlling e. Heat is transferred in liquids by________________________plz i dont wanna get grounded Puritans derived their name from the fact that they a. Believed that the highest ideal was the purity of Christ b. Believed they had greater moral purity than other Christians c. Insisted that people guilty of gross sin should not be allowed in the Church d. Wanted to purify the Church of England of all features of Catholicism PLEASEE HELP ME ASAPPP (geometry) 3 write the factor of the following (1) 48 (2) 36 (3) 28 (4) 100 (5) 125 Is I not pity you grammatically correct? The answer to this math problem need help A client has a third-degree burn on the leg. The wound is being treated by the open method. After about 4 days, a hard crust has formed around the leg and is impairing the circulation to the leg. What procedure would be done to relieve pressure on the affected area?A. escharotomyB. debridementC. allograftD. silvadene application Choose the best answer1. They spent a lot of money on food and clothes.A. A lot of money on food were spentB. A lot of money was spent on food and clothesC. A lot of money were spent on food and clothesD. 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