In a female pig, the urethra, and the vagina unite to form the ________
A) urogenital sinus
B) urogenital orifice
C) genital papilla
D) vulva
A
Explanation:
B) The urogenital sinus opens to the outside at the urogenital orifice.
C) The genital papilla covers the urogenital orifice.
D) Vulva is the collective term for the genital papilla and the urogenital orifice.
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A lack of ATP in the muscle cell will lead toA) calcium build-up in the cytosol.B) myosin heads becoming "stuck" in a bound configuration with actin.C) troponin unbinding from tropomyosin.D) frequent twitches with short periods of relaxation in between.E) sustained flaccid paralysis.
What will be an ideal response?
The primary mechanism of water reabsorption in the kidney is
A. osmosis through aquaporins. B. bulk transport by means of endocytosis. C. secondary active transport by means of a sodium-water symporter. D. primary active transport by means of a protein pump.
Name the major nerves associated with the brachial plexus
What will be an ideal response?
Curare blocks acetylcholine receptors at the motor end plate. This would result in
A. inability of the muscle fiber to respond to nervous stimulation. B. more acetylcholinesterase production. C. lack of Ca2+ uptake by the muscle fiber. D. increased stimulation of the muscle. E. sustained contraction of the muscle.