You just ran over a skunk on your way to class. The odor was overwhelming and in response you wrinkled your nose in disgust. You have just used your
A. frontal belly of the occipitofrontalis muscle.
B. occipital belly of the occipitofrontalis muscle.
C. nasalis muscle.
D. depressor anguli oris.
E. procerus muscle.
Answer: E
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Sequence the following events involved in muscle cell contraction:
1 . Sodium channels open and sodium flows in. 2 . Impulse reaches the axon's terminal. 3 . ACh binds to receptors on the muscle cell membrane. 4 . Synaptic vesicles fuse with neuron's membrane and release ACh via exocytosis. 5 . If enough sodium moves in to the muscle cell, an impulse (action potential) develops. a. 1, 2, 3, 4, 5 b. 2, 1, 3, 4, 5 c. 2, 4, 3, 1, 5 d. 3, 4, 5, 1, 2 e. 3, 5, 2, 1, 4
Which immune response has a shorter lag phase in which more antibody levels peak more rapidly?
A) inflammation response B) primary immune response C) passive immunity D) secondary immune response
Which of the following structures is not found in the shoulder?
A. The radioulnar ligament B. The coracohumeral ligament C. The rotator cuff D. The glenohumeral ligament E. The transverse humeral ligament
A gene that is responsible for producing trypsin in the pancreas would be a ____ gene
A. dominant B. regulatory C. structural D. recessive E. functional