Broadly speaking, how many internal factors in the body must be homeostatically maintained?
a. nine
b. seven
c. five
d. four
e. three
b
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Match the type of cell junction with the best description. Answers may be used once, more than once, or not at all
1. simplest cell-cell junction 2. contributes to the blood-brain barrier 3. can be cell-matrix junctions 4. their loss is characteristic of cancer A. gap junction B. tight junction C. anchoring junction
Sperm are able to penetrate the zona pellucida only after binding with specific receptor sites on the surface of this layer
Indicate whether the statement is true or false
All of the following muscles contribute to moving the mandible to the right (right lateral excursion) EXCEPT the
A. right temporalis. B. left lateral pterygoid. C. left medial pterygoid. D. right masseter. E. right lateral lateral pterygoid
A nurse pricks your finger to type your blood. You flinch at the pain, pulling your hand back. This is called the ________ reflex.
A. flexor (withdrawal) B. tendon C. convergence D. crossed extension E. stretch