The following are various components of the conducting system of the heart: 1. Purkinje cells 2. AV bundle 3. AV node 4. SA node 5. bundle branches The sequence in which an action potential would move through this system is
A) 1, 4, 3, 2, 5.
B) 3, 2, 4, 5, 1.
C) 3, 5, 4, 2, 1.
D) 4, 3, 2, 5, 1.
E) 4, 2, 3, 5, 1.
D) 4, 3, 2, 5, 1.
Anatomy & Physiology
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The right hand and wrist of an adult has __________ bones.
A. 15 B. 18 C. 25 D. 27 E. 28
Anatomy & Physiology
A twisting motion of the foot that turns the sole of the foot outward is known as
A) inversion. B) plantar flexion. C) eversion. D) dorsiflexion. E) pronation.
Anatomy & Physiology
________ is a result of deficient thyroid hormone secretion in infancy.
Fill in the blank(s) with the appropriate word(s).
Anatomy & Physiology
The chemoreceptors in the carotid and aorta are sensitive to:
a. an increase in blood carbon dioxide b. a decrease in blood oxygen c. an increase in blood acidity d. all of the above
Anatomy & Physiology