Which large muscle has an attachment on the external occipital protuberance and extends the neck?
A. Splenius capitis
B. Semispinalis capitis
C. Sternocleidomastoid
D. Trapezius
E. Longissimus
D. Trapezius
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Water output is largely controlled by varying ________.
A. urine volume B. sweating C. metabolic water production D. cutaneous transpiration E. drinking
In general, steroid hormones bind to receptors on cell membranes, whereas peptide hormones bind to receptors inside of cells
Indicate whether the statement is true or false.
Which of the following statements accurately describe events that occur as a result of a local potential reaching threshold?
A. Activation gates of Na+ ion channels begin to close. B. Inactivation gates of Na+ ion channels begin to open. C. A positive feedback cycle develops in which depolarization causes activation gates of Na+ ion channels to open. D. K+ ion channels begin to close. E. Inactivation gates of Na+ ion channels begin to open and a positive feedback cycle develops in which depolarization causes activation gates of Na+ ion channels to open.
The two lobes of the thyroid gland are connected by the
A) isthmus. B) pars intermedia. C) commissure. D) aqueduct. E) infundibulum.