Movement of the sensory receptors in the ampullae of the semicircular canals
A) produces sound.
B) allows us to hear sounds.
C) stimulates the receptor cells, alerting us to rotational movement.
D) stimulates the receptor cells to a change in body position with respect to gravity.
E) allows us to perceive linear acceleration.
C) stimulates the receptor cells, alerting us to rotational movement.
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An example of an interosseus fibrous joint is ________.
A) the clavicle and the scapula at the distal ends B) the radius and ulna along its length C) between the vertebrae D) between the humerus and the glenoid cavity
Answer the following statements true (T) or false (F)
1. Calcitonin targets the bones and causes the release of calcium from storage when serum levels are low. 2. The normal pH of blood is 7.35-7.45. 3. Most acidic substances (hydrogen ions) originate as by-products of cellular metabolism. 4. Weak acids are able to act as chemical buffering systems for the body because they partially dissociate. 5. The phosphate buffer system is relatively unimportant for buffering blood plasma.
All oxygenated blood returns to the heart via the:
A. pulmonary artery. B. pulmonary veins. C. aorta. D. venae cavae.
Explain why the citric acid cycle is called a cycle
What will be an ideal response?