Stroke volume is increased by ________
A) high arterial blood pressure
B) dehydration
C) increased afterload
D) increased venous return
E) negative inotropic agents
D
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Acetylcholinesterase, monoamine oxidase (MAO), and catechol-O-methyltransferase are
A) neurotransmitters. B) enzymes that break down neurotransmitters. C) enzymes that act as neuromodulators. D) enzymes that could produce an EPSP. E) substances that could produce an IPSP.
How many pulmonary arteries empty into the right atrium of the heart?
A. None B. One C. Two D. Four E. Six
The central nervous system develops from the embryonic
A) neural plate. B) notochord. C) mesoderm. D) endoderm.
Compare nicotinic receptors and muscarinic receptors
A) Nicotinic receptors are acetylcholine receptors on the surface of sympathetic and parasympathetic ganglionic cells. Muscarinic receptors are acetylcholine G protein-coupled receptors located at all parasympathetic neuromuscular and neuroglandular junctions, and at a few sympathetic neuromuscular and neuroglandular junctions. B) Nicotinic receptors are acetylcholine G protein-coupled receptors located at all parasympathetic neuromuscular and neuroglandular junctions, and at a few sympathetic neuromuscular and neuroglandular junctions. Muscarinic receptors are acetylcholine receptors on the surface of sympathetic and parasympathetic ganglionic cells. C) Nicotinic receptors binds epinephrine on the membrane of sympathetic target cells. Muscarinic receptors binds norepinephrine on the membrane of sympathetic target cells. D) Nicotinic receptors binds norepinephrine on the membrane of sympathetic target cells. Muscarinic receptors binds epinephrine on the membrane of sympathetic target cells. E) Nicotinic receptors binds norepinephrine and epinephrine on the membrane of sympathetic target cells. Muscarinic receptors are acetylcholine receptors on the surface of sympathetic and parasympathetic ganglionic cells.