Your little brother just stuck his tongue out at you. Which tongue muscle did he use?
A) orbicularis oris
B) genioglossus
C) stylohyoid
D) hyoglossus
B
Explanation:
A) The orbicularis oris is not used to stick the tongue out.
C) The stylohyoid does not contract the tongue.
D) The hyoglossus can retract the tongue.
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A person works an office job that requires them to be in a sitting position for 10 hours a day. They go home and sit until they go to bed. This person never exercises and rarely gets up to move around after being seated. Their joints begin to constantly feel stiff and painful. On a physiological level, what has happened to cause these symptoms?
A. Disuse of the joint causes ossification of the fibrocartilage, creating arthritic joints. B. Lack of movement hinders blood from moving through the vessels of the synovial membrane, which starves the ligaments of nutrients and causes them to lose elasticity. C. Being stuck in the same position for long periods of time causes the ligaments to physically decay, stiffening the joints. D. Lack of movement drives the synovial membranes to stop producing synovial fluid, which then causes friction to generate upon movement of the joints.
Summation events result from increasing amounts of cytoplasmic calcium levels
Indicate whether the statement is true or false
When a nonpolar molecule is placed in water, it will
A. dissociate and carry electrical current. B. carry electrical current but not dissolve or dissociate. C. neither dissolve nor carry electrical current. D. dissolve and carry electrical current.
Which is not a type of neuronal pool?
A. Reverberating B. Triangular-pre-discharge C. Converging D. Parallel-after-discharge E. Diverging