The thoracic cavity contains the heart and lungs.?
Indicate whether the statement is true or false
True
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In a neuromuscular junction, the effect of acetylcholine (ACh) binding to receptors on the motor end plate lasts only briefly due to
a) rapid uptake of the ACh into the myofiber. b) endocytosis of the ACh receptor into the myofiber. c) rapid destruction of ACh in the synaptic cleft by acetylcholinesterase. d) rapid destruction of ACh in the synaptic cleft by monoamine oxidase. e) diffusion of the ACh out of the synaptic cleft.
Complement facilitates inflammation by activating basophils and mast cells and by attracting macrophages and neutrophils
Indicate whether this statement is true or false.
Which of the following is NOT a muscle of ventilation, or breathing?
A) external intercostal muscles B) internal intercostal muscles C) diaphragm D) external oblique muscle
Atrial natriuretic peptide ________ in kidneys.
A. inhibits the reabsoprtion of Na+ B. stimulates the reabsoprtion of K+ and the secretion of Na+ C. stimulates the reabsoprtion of K+ D. stimulates the reabsoprtion of Na+ and the secretion of K+