In a workout your muscle cells produce lactic acid, yet you maintain a constant blood pH because ________
A) the body contains chemicals called buffers that resist changes in pH
B) endothelial cells secrete excess H+ to prevent a decrease in pH
C) metabolic acids are neutralized in muscle cells before released into the blood
D) metabolic bases are produced at the same rate by muscle cells to neutralize the acids
E) the respiratory system removes excess H+ from the blood before the pH is lowered
A
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Which figure exhibits concentric contraction of the biceps brachii muscle?
a) A b) B c) C d) none of these choices
Blood pressure is highest in which of the following vessels?
A. Large veins B. Conducting arteries C. Distributing arteries D. Venules E. Capillaries
If the body is sliced so the result is a top and bottom portion, this is referred to as the:
A) transverse plane. B) cross section. C) midsagittal plane. D) body's midline.
During isometric contraction of a skeletal muscle fiber, tension increases but the fiber length stays the same
Indicate whether the statement is true or false.