Pauline takes a medication known as a ?-blocker to decrease the rate and force of contraction of her heart. Predict the neurotransmitter this medication prevents from binding and determine the specific type of ? receptor being blocked by this
medication.
What will be an ideal response?
A drug known as a ?-blocker is an antagonist that binds ?1 receptors to block the effects of norepinephrine and epinephrine. Beta-1 (?1 ) receptors are found in the plasma membranes of cardiac muscle cells. This medication prevents epinephrine and norepinephrine from binding those ?1 receptors.
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What is the function of intrinsic factor?
A. It stimulates production of mucus. B. It begins chemical digestion of protein. C. It stimulates production of hydrochloric acid. D. It assists with absorption of vitamin B in the small intestine. E. It digests fat in the stomach.
The ________ is the liquid portion of the cell between the plasma membrane and nucleus.
cytoskeleton peroxisome cytosol phospholipids
The first portion of the large intestine is the:
a) cecum. b) transverse colon. c) rectum. s) ascending colon.
The opening of the internal urethral sphincter is through action of the
A. enteric nervous system. B. somatic nervous system. C. parasympathetic nervous system. D. sympathetic nervous system.