Which muscle is the prime mover for the "up" part of a sit-up?
A. Serratus posterior
B. Erector spinae
C. Trapezius
D. Rectus abdominis
E. Rectus femoris
D. Rectus abdominis
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This portion of the brain forms part of the roof of the diencephalon and covers the third ventricle. Its posterior portion houses the pineal gland and the habenular nuclei.
A. Infundibulum B. Thalamus C. Epithalamus D. Cerebellum E. Hypothalamus
Nerve tracts other than the corticospinal tracts that transmit impulses into the spinal cord
are called extrapyramidal tracts. Indicate whether the statement is true or false
When antidiuretic hormone (ADH) levels are low ________
A) nearly all of the filtered water is reabsorbed
B) a small volume of concentrated urine is excreted
C) most of the water reaching the collecting ducts is not reabsorbed
D) aquaporins are inserted into the principal cell apical membranes
Poisoning that disables the Na+/K+ pump would ________.
A. increase cellular permeability to K+ B. generate a more negative membrane potential C. increase cellular permeability to Na+ D. inhibit secondary active transport