The type of cartilage that forms embryonic models for most of our bones is
A. reticular cartilage.
B. elastic cartilage.
C. hyaline cartilage.
D. areolar cartilage.
E. fibrocartilage.
Answer: C
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Which of the following is an example of endocrine regulation via a negative feedback mechanism?
A) As blood glucose levels fall, glucagon is secreted and stimulates the liver to convert glycogen to glucose. B) A stress response stimulates the sympathetic nervous system to release epinephrine into the bloodstream. C) When circulating volume is decreased, the pituitary gland secretes antidiuretic hormone into the bloodstream. D) The neural regulating mechanism decreases its signals to the adrenal medulla, decreasing epinephrine release.
The intracellular concentration of water in the cells of the body is normally the same as the extracellular concentration of water
Indicate whether the statement is true or false.
Goldfish may live as long as ____________ years
Fill in the blank(s) with correct word
An inhaler used to treat airway constriction in asthma or allergy might contain a drug that
A) activates ?1 adrenergic receptors. B) activates ?2 adrenergic receptors. C) activates muscarinic cholinergic receptors. D) blocks ?2 adrenergic receptors. E) activates ?2 adrenergic receptors or activates muscarinic cholinergic receptors.