Consider the sensory homunculus. Why is a large portion of the sensory area dedicated to the hands and fingers?
A) Sensory receptors are larger in the hands and fingers than in other parts of the body.
B) Sensory receptors are equally distributed in all body areas.
C) There are fewer sensory receptors in the hands and fingers than in other parts of the body.
D) There are a larger number of sensory receptors in the hands and fingers than in other parts of the body.
D
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Since insulin released from the pancreas is carried in the bloodstream to distant target cells, like muscle cells, it is considered to be a(n)
a) local hormone. b) circulating hormone. c) paracrine. d) autocrine. e) neurotransmitter.
Which of the following must occur for muscles to recover from fatigue?
A) ATP is produced via aerobic respiration. B) Lactic acid builds up in the sarcolemma of muscle cells. C) Muscle cells start to make ATP in anaerobic conditions. D) Lactic acid is metabolized to pyruvate or glucose and ATP reserves are restored.
The clavicle articulates with the
A) coracoid process and the humerus. B) glenoid cavity and scapular spine. C) coracoid process and acromion. D) manubrium and xiphoid process. E) manubrium and acromion.
A person who has a tidal volume of 400 ml/breath, a respiratory rate of 14 breaths/minute, and an anatomic dead space volume of 120 ml will have a pulmonary ventilation rate of
a. 3000 ml/minute b. 3920 ml/minute c. 4260 ml/minute d. 5600 ml/minute e. 6240 ml/minute