Which of the following is a function of the pigmented layer of the retina?
A) provide eye color
B) house the photoreceptors
C) secrete vitreous humor
D) absorb light passing through the neural layer
E) refract light onto the photoreceptors
D
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"Dual innervation of effectors" refers to the innervation of the same effector organs by somatic and autonomic nerves.
Answer the following statement true (T) or false (F)
Development is a continuous process and includes growth.
Answer the following statement true (T) or false (F)
Surface barriers, such as cutaneous and mucous membranes, serve the immune system as the:
A) first line of defense. B) second line of defense. C) third line of defense. D) fourth line of defense.
Cells of the central nervous system that engulf and destroy cellular debris and bacteria are called:
a. astrocytes b. afferent neurons c. oligodendrocytes d. microglia cells