Explain the role of oxytocin in lactation
What will be an ideal response?
Oxytocin is responsible for the actual ejection of milk from the alveoli of the mammary glands during lactation, a process called the let-down reflex. Let-down occurs when oxytocin binds to myoepithelial cells surrounding the glands and causes them to contract and eject the milk. During nursing, oxytocin also stimulates the recently emptied uterus to contract, which helps return it to pre-pregnancy size.
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An atom is electrically neutral
Indicate whether the statement is true or false.
Which cranial nerve in the diagram innervates the lateral rectus muscle?
a) B b) C c) D d) E e) F
Vasoconstriction of blood vessels in the skin
a. is coordinated by the sympathetic nervous system b. increases heat exchange with the environment c. occurs when core body temperature is elevated d. is both a and b e. is both b and c
The thickest protein fibers from the following group are
A) neurofilaments. B) keratin filaments. C) microfilaments. D) microtubules. E) myosin molecules.