The four most common elements in the human body are oxygen, carbon, nitrogen, and hydrogen
Indicate whether the statement is true or false
TRUE
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During the process of endochondral ossification, chondrocytes in the cartilage model die. Why does this occur?
A. Canaliculi connecting adjacent chondrocyte lacunae fuse. B. Nutrients cannot diffuse to the chondrocytes through the calcified matrix. C. Blood supply to the cartilage is cut off by the developing periosteum. D. Phagocytic osteoclasts in the new bone engulf and destroy the chondrocytes. E. The developing bone collar secretes enzymes that destroy the chondrocytes.
The thyroid gland is located ________.
A) on top of the kidneys B) directly below the Adam's apple C) within the mediastinum D) within the pancreas E) within the parathyroid glands
Polio can sometimes damage the brainstem respiratory centers and result in which condition?
A) A pneumothorax B) A Bohr effect C) Atelectasis D) Ondine's curse E) Adult respiratory distress syndrome
Matching
A) Fixator B) Antagonist C) Synergist D) Agonist (prime mover) 23) Muscle that opposes and reverses the action of another muscle. 24) Muscle that stabilizes the origin of another muscle. 25) Muscle that is primarily responsible for bringing about a particular movement. 26) Muscle that aids another by promoting the same movement.