Answer the following statements true (T) or false (F)
1. Veins that drain the cerebral hemispheres are the internal cerebral veins.
2. The sigmoid sinus, which penetrates the jugular foramen, leaves the skull as the external jugular vein.
3. The cervical spinal cord and the posterior part of the skull are drained by the vertebral veins.
4. The temporal and maxillary veins drain into the internal jugular veins.
1. TRUE
2. FALSE
3. TRUE
4. FALSE
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Sympathetic innervation of the hearta: increases the heart rate.b: decreases the heart rate.c: increases the force of contractions.d: decreases the force of contractions.e: has no effect on contraction force.
A. b, d B. a, d C. a, e D. b, e E. a, c
Blood being pumped out of the left ventricle enters the:
A. pulmonary artery. B. aorta. C. coronary sinus. D. venae cavae.
In comparing a trained athlete to a non-athlete, which of these comparisons is false?
A) The athlete has a lower resting heart rate. B) Both hearts weigh about the same. C) The athlete has a higher resting stroke volume. D) The athlete has a higher exercise stroke volume. E) The athlete has a higher exercise cardiac output.
Compression of what nerve arising from the brachial plexus results in numbness, tingling, and pain in the fingers, a condition called carpal tunnel syndrome?
A) axillary nerve B) radial nerve C) median nerve D) musculocutaneous nerve