A 21-year-old woman delivered a normal term infant a week ago and is now nursing the infant. She now notes a lump in her right axilla that has increased in size over the past week. On physical examination there is a rubbery, mobile, 1.5-cm mass beneath the skin at the right anterior axillary line. The mass is excised and the microscopic appearance is shown in the figure. Which of the following hormones most likely pro- duced the greatest effect upon this tissue?
A Cortisol
B Growth hormone
C Oxytocin
D Prolactin
E Testosterone

Answers

Answer 1

On physical examination there is a rubbery, mobile, 1.5-cm mass beneath the skin at the right anterior axillary line.

Oxytocin

The peptide hormone and neuropeptide oxytocin (Oxt or OT) is typically made in the hypothalamus and released by the posterior pituitary. It contributes to social interaction, reproduction, childbirth, and the time following childbirth. During labor and in response to sexual activity, the hormone oxytocin is released into the bloodstream. Additionally, it is accessible in pharmaceutical form. Oxytocin induces uterine contractions in both forms, hastening the labor process. In its natural state, it also contributes to the formation of the mother-baby relationship and milk production. A positive feedback loop governs the creation and release of oxytocin, with the first release of the hormone stimulating subsequent production and release. For instance, when oxytocin is released throughout a uterine contraction

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Related Questions

please select all of the locations where coccidioidomycosis is endemic.check all that apply semi-arid desert areas semi-arid desert areas the western hemisphere the western hemisphere the south atlantic states of the united states the south atlantic states of the united states the mississippi and ohio river drainage areas of the united statesthe mississippi and ohio river drainage areas of the united states

Answers

The locations where coccidioidomycosis is endemic are a) Semi-arid deserts and b) The western hemisphere

Coccidioidomycosis is most common in the southwestern United States' semi-arid desert climate. Acute disease is brought on by the organisms being breathed in as spores, resulting in fever, chills, chest pain, hemoptysis, and dyspnea. The study of chest imaging reveals both condolidation and caitation, as well as widespread hilar lymphadenopathy. Patients with a previous infection are susceptible to reactivation and dissemination, regardless of their immunocompromised status. The semiarid regions of the United States have long been identified as the Coccidioidomycosi epidemic region, which is also located in the Western hemisphere. The activities that allow the fungus to enter the air and be inhaled by the susceptible host are the cause of the infection.

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Place the biochemical name and enzymatic activity corresponding to each complex within the respiratory chain. Complex 1 Complex II Complex III Complex IV Answer Bank cytochrome bo, complex facilitates electron transfer from ubiquinol to cytochromec facilitates electron transfer from cytochrome o to 0, facilitates electron transfer from spyinate to ubiquinone succinate dehydrogeonse complex facilitates electron transfer from NADH to ubiquinone cytochrome oxidase NADH dehydrogenase complex

Answers

The series of electron flow in the respiratory chain in the mitochondria membrane is-

NADH -------> Q --------> Cyt b ------> Cyt c1 --------> Cyt c -------> Cyt (a + a3) -------> O2

Complex I ; NADH dehydrogenase Complex Facilitated the electron transfer NADH to ubiquinone

Complex II; Succinate dehydrogenase Complex Facilitated the electron transfer succinate to ubiquinone

Complex III; Cytochrome bc1 complex or Ubiquinone: cytochrome c oxidoreductase Facilitated the electron transfer from ubiquinol to cytochrome c.

Complex VI; Cytochrome oxidase Facilitated the electron transfer from cytochrome c to O2​​​​​​.

In the electron transport chain, four protein complexes (designated complex I-IV) are involved in transporting electrons from NADH and FADH2 to molecular oxygen.

Complex I creates the hydrogen ion gradient by pumping four hydrogen ions from the matrix into the intermembranous region across the membrane.

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