What normally serves as the pacemaker of the entire heart?
What will be an ideal response?
Sinoatrial (SA) node
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Although Christopher had spinal cord damage, his autonomic nervous system (ANS) was still able to maintain some control over his viscera in the thoracic and abdominopelvic cavities. Which ANS division could still maintain some control? Explain
What will be an ideal response?
A home heating system is an example of a ________ feedback system; the thermostat acts as the
A. positive; set point. B. negative; effector. C. negative; control center. D. positive; sensor.
________ are found especially in the mucous membrane, standing guard against parasites and allergens
A) Basophils B) Neutrophils C) Monocytes D) Lymphocytes E) Eosinophils
which muscle flexes, adducts and medially rotates the humerus?
a) pectoralis major b) trapezius c) brachialis d) pectoralis minor