What ultimately stops muscle stimulation when the motor neuron ceases firing?
What will be an ideal response?
The ultimate switch is the enzyme acetylcholinesterase. When the neuron stops releasing ACh, the muscle would not stop contracting if the acetylcholinesterase did not split the ACh into its two components, acetyl and choline, making them release their binding sites.
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Which of the following is not a muscle of the lower extremity?
A. Adductor magnus B. Sartorius C. Semitendinosus D. Flexor carpi ulnaris E. Pectineus
Mucosa-associated lymphatic tissues (MALT) include the:
A) tonsils. B) liver. C) kidneys. D) spleen.
Snapping your fingers involves what movement of the thumb?
A) Snapping involves retraction at the thumb and protraction at the third metacarpophalangeal joint. B) Snapping involves protraction at the thumb and retraction at the third metacarpophalangeal joint. C) Snapping involves opposition at the thumb and extension at the third metacarpophalangeal joint. D) Snapping involves opposition at the thumb and flexion at the third metacarpophalangeal joint. E) Snapping involves opposition at the thumb and inversion at the third metacarpophalangeal joint.
What is the primary effect of antidiuretic hormone (ADH, or vasopressin)?
A.)blood glucose regulation B.)water retention by the kidneys C.)sodium retention by the kidneys D.)increases urine production by the kidneys