Voltage-gated sodium channels are activated:
A) during repolarization.
B) during hyperpolarization.
C) only if the cell is depolarized to threshold.
D) after voltage-gated potassium channels are activated.
Answer: C
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Answer the following statements true (T) or false (F)
1) A muscle of the scalp, with two bellies separated by a collagenous sheet is called occipitofrontalis. 2) A muscle that surrounds the opening of the mouth is orbicularis occuli. 3) A muscle that makes of the lateral walls of the oral cavity is the buccinator. 4) A superficial muscle that covers the anterior surface of the neck is the trapezius. 5) A muscle that is located at the tip of the chin is called mentalis.
Moving the arm up in front of the body in the sagittal plane is called what?
What will be an ideal response?
The foramen magnum is found in the ________ bone
A) frontal B) parietal C) sphenoid D) occipital E) temporal
The postganglionic axons of the sympathetic branch of the ANS are considered short.
Answer the following statement true (T) or false (F)