Identify the urethra in the following figure.

A) A
B) B
C) C
D) D
E) E

Which sensory receptor detects light?

A) photoreceptor
B) mechanoreceptor
C) thermoreceptor
D) chemoreceptor
E) pain receptor

What connects the pituitary gland to the hypothalamus?

A) brain stem
B) midbrain
C) infundibulum
D) thalamus

Mitosis forms

A) two daughter cells with half the DNA of the parent cell.
B) two daughter cells with the same amount of DNA as the parent cell.
C) daughter cells called gametes.
D) two daughter cells with twice the amount of DNA as the parent cell.
E) one daughter cell and another incomplete cell.

Neanderthals were first discovered near and named for the:

A) Neander Bay in Canada.
B) Neander Valley in India.
C) Neander River in Africa.
D) Neander Valley in Germany.
E) Neander Mountains in France.

Excess K⁺ in cardiac tissue causes

A) an increased heart rate.
B) a rapid repolarization of cardiac cells.
C) a decrease in the frequency of action potentials in the conduction system.
D) an increase in stroke volume.
E) an increase in the frequency of action potentials.