The partial pressure of carbon dioxide in venous blood is approximately
A) 40 mm Hg.
B) 45 mm Hg.
C) 50 mm Hg.
D) 70 mm Hg.
E) 100 mm Hg.
B
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The shallow socket of the shoulder joint restricts the movement of the humerus but does increase the stability of the joint
Indicate whether the statement is true or false
Calluses or corns are the result of accelerated multiplication by ________
A) fibroblasts B) keratinocytes C) melanocytes D) red blood cells E) tactile cells
Structure A is the
A) synovial cavity.
B) joint capsule.
C) hyaline cartilage.
D) compact bone.
E) marrow cavity.
The lymphocytes are most important in
A) helping maintain normal blood volume. B) transporting gases to and away from lymph nodes. C) eliminating variations in the composition of interstitial fluid. D) transporting lipids from the digestive tract. E) fighting infection.