GENERAL HISTOLOGY

ENDOCRINE SYSTEM

ENDOCRINE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In a lactating mammal, the two hormones that promote milk synthesis and milk release, respectively, are ____
A
prolactin and calcitonin.
B
prolactin and oxytocin.
C
follicle-stimulating hormone and luteinizing hormone.
D
luteinizing hormone and oxytocin.
Explanation: 

Detailed explanation-1: -During lactation, prolactin promotes milk synthesis and oxytocin stimulates milk ejection.

Detailed explanation-2: -Maintenance of Lactation (Galactopoiesis) Galactopoiesis is dependent on removal of milk and a suckling or milking stimulus in all animals. Milk synthesis will not continue if the product is not effectively removed. Prolactin is released at milking along with adrenocorticotrophic hormone (ACTH) and oxytocin.

Detailed explanation-3: -Synthesis of milk in the mammary gland is by prolactin, and estrogens, progesterone; Release of milk through nipple by suckling reflex is by oxytocin.

Detailed explanation-4: -Milk production (i.e., lactation), which occurs in the mammary glands, is regulated by several hormones, most prominently prolactin and oxytocin.

Detailed explanation-5: -Lactation is maintained by regular removal of milk and stimulation of the nipple, which triggers prolactin release from the anterior pituitary gland and oxytocin from the posterior pituitary gland.

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