Photoreceptor cells that are most useful in dim light are
A) rods.
B) cones.
C) amacrine cells.
D) horizontal cells.
E) bipolar cells.
A
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A mixing contraction in the small intestine is called ________.
A. deglutition B. peristalsis C. segmental contraction D. mass movement
What is the correct order of blood flow to the uterus?
A. Uterine artery --> Arcuate arteries --> Spiral arteries B. Uterine artery --> Spiral arteries --> Arcuate arteries C. Spiral arteries --> Uterine artery --> Arcuate arteries D. Arcuate arteries --> Spiral arteries --> Uterine artery
A patient appears in a clinic complaining of irritability and chronic sweatiness
He also has a lump in his neck near his larynx. Blood tests show he has low levels of thyroid-stimulating hormone (TSH) in his plasma. Which of the following is the most likely diagnosis? A. primary hypothyroidism B. an iodine-insufficient diet C. secondary hypothyroidism D. hyposecretion of TRH E. Graves' disease
Which of the following is NOT an action of angiotensin II?
A. vasoconstriction of arterioles B. increases thirst C. increases ADH secretion D. decreases peripheral resistance E. increases aldosterone secretion