Skin, hair, and nails belong to the ____ system
a. integumentary
b. muscular
c. digestive
d. endocrine
a
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A fetus develops without macula densa in its nephrons. Which of the following will occur as a result?
A. The ability to detect sodium, potassium, and chloride ions in the nephron loop and secrete renin in response will be lost. B. Fluid cannot pass from the glomerular capillaries into the Bowman's capsule, so blood cannot be filtered. C. Renin will be able to convert angiotensinogen into angiotensin I, but angiotensin I cannot be converted into angiotensin II. D. Renin secretion in response to renal baroreceptors during low blood pressure conditions cannot occur.
If neuronal pathways present at birth are not used during sensitive developmental periods, they may be eliminated
Indicate whether the statement is true or false
Which of the following is a skin receptor for light touch, movement, and vibration?
A) free nerve endings B) lamellated corpuscles C) Pacinian corpuscles D) tactile
When the secretions from the gland must go through a duct, it is a(n) _____ gland.?
A) ?endocrine B) ?exocrine C) ?islets of Langerhans