The part of the homeostatic control mechanism that brings about change is the
A. control center.
B. stimulus.
C. receptor.
D. effector.
Answer: D
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During meiosis, crossing-over results in the exchange of homologous genes from one of a pair of chromatids to the other with no net change in possibilities for genetic expression.
Answer the following statement true (T) or false (F)
What two muscles insert on the calcaneal tendon?
A. Tibialis posterior and popliteus B. Gastrocnemius and soleus C. Flexor digitorum longus and flexor hallucis longus D. Tibialis anterior and extensor digitorum longus E. Extensor hallucis longus and fibularis longus
The coronary arteries arise from the
a. aorta. b. inferior vena cava. c. superior vena cava. d. right atrium. e. pulmonary trunk.
Membranes that open to the exterior are called ________ membranes.
Fill in the blank(s) with the appropriate word(s).