The following steps occur in rods when they are excited by photons of light i. membrane sodium channels close ii. increased phosphodiesterase breaks down cGMP iii. retinal changes from the 11-cis form to the 11-trans form iv. the membrane hyperpolarizes and the rate of neurotransmitter release declines v. opsin activates transducin vi. opsin activation occurs The proper sequence for these steps is

The division of the autonomic system that prepares the rest and repose is the _____ division.

The chest is ________ to the umbilicus.

Which of the following regions corresponds to the lower arm?

William Harvey was in what major time period?

Who applied physics, chemistry and psychology to the study of the human body?

Johannes Muller was in what major time period?

The vascular tunic consists of the:

The transparent portion of the eye is the

Taste buds sensitive to bitterness are concentrated at the __________ of the tongue.