To compensate for significant blood loss, the autonomic nervous system triggers
A. vasoconstriction and an increase in heart rate.
B. vasoconstriction and a decrease in heart rate.
C. vasodilation and an increase in heart rate.
D. vasodilation and a decrease in heart rate.
A
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The oval window touches the stapes and the ________.
Fill in the blank(s) with the appropriate word(s).
Why are there a large number of lymphatic vessels associated with the small intestine?
What will be an ideal response?
The condition known as "flat feet" is due to a lower-than-normal longitudinal arch in the foot. A problem with which of the following would most likely contribute to this condition?
A) a loose Achilles tendon B) weak tarsometatarsal joints C) weakness in the ligaments that attach the calcaneus to the distal ends of the metatarsals D) weakness in the ligaments that attach the talus to the tibia E) poor alignment of the phalanges with the metatarsals
Arm and legs buds appear at about 28 days from
A. the coelom. B. apical ectodermal ridges. C. somitomeres. D. neural crest cells.