The action potentials are slowed at the AV node to allow the
A. pacemaker to reset for the next beat.
B. atria to complete their contraction.
C. ventricles to repolarize.
D. atria to begin their contraction.
E. ventricles to completely empty of blood.
Answer: B
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Cartilage cells occupy small chambers called ________.
Fill in the blank(s) with the appropriate word(s).
What can a deficiency of growth hormone during bone formation cause?
A) inadequate calcification of bone B) decreased osteoclast activity C) decreased proliferation of the epiphyseal plate cartilage D) increased osteoclast activity
The lymphatic capillaries function to absorb the excess protein-containing interstitial fluid and return it to the bloodstream
Indicate whether the statement is true or false
Pectoralis major originates on the ________ and inserts in the intertubercular sulcus of the humerus
A) lateral aspect of ribs 2 through 5 B) anterior surface of the scapula C) the clavicle, acromion, and spine of the scapula D) clavicle and sternum