Premature infants born after only 30 weeks of gestation may spend as much as _______% of their sleep time in REM sleep.

_______% of sleep in the first two weeks of life is _______ sleep.

Thick and thin filaments of muscle are made up of

You have managed to isolate and knock out the gene that controls the myelination of nerve fibers. This will cause the loss of most sensory functions except which of the following?

Heroin is a strong, addictive pain killer. When injected into the _______, the drug binds to_______ and causes strong analgesia.

If a person loses the ability to detect illusory contours, the structure that most likely has sustained damage is area _______ of the visual cortex.

Refer to the figure, showing the typical sleep pattern of an elderly person. This pattern shown here is notable because of the

The two major cell types that make up the nervous system are _______ cells and _______.

Which of the following would not be classified as “pro-apoptosis”?

If you eat something extremely hot that burns the tip of your tongue, you are most likely to injure