Exam 30: Nervous and Sensory Systems

A myelin sheath

As a whole,the nervous system converts stimuli into ________ input-action potentials that convey information about stimuli.

The brain has important interactions with the endocrine system.Which part of the brain directly stimulates the release of hormones from the pituitary gland?

The figure below illustrates the organ of Corti,a part of the cochlea in the human inner ear. What labeled region of this figure of the organ of Corti is directly stimulated to vibrate in response to the air movements caused by sound?

When the difference in charge across a neuron's cell membrane decreases,the cell is depolarizing.

Examine the figure below. The path of the arrows in this figure indicates the movement of ________ through a neuron.

A signal-sending neuron releases a ________,a molecule that carries the signal across the synapse between nerve cells.

Air pressure between the middle and outer ear is equalized by the

A person who,as a result of a mutation,could NOT produce one of the pigment molecules found in cones

The ________ nervous system ferries signals to and from the central nervous system.

The cerebral cortex of the human brain is much more highly and intricately folded than the same region in other animals.Why might this be the case?

One interneuron can send signals to the peripheral nervous system and the brain at the same time.

Neurotransmitters move from dendrites to cell bodies to axons.

Researchers have suggested a fifth taste in humans known as umami and attribute the taste to the compound glutamate.Which of the following would support the belief that umami is a real taste?

Where would you expect to see an absence of neurotransmitters?

The human skin has numerous sensory receptors that take in information about our environment,and these receptors are concentrated in areas where detailed information on touch is needed.Which of the following body areas is likely to have the smallest number of sensory receptors?

The center of the human retina has a region called the ________ where cones are most densely packed.

Which of the following is FALSE?

The cerebrum has four major lobes: the parietal lobe,the frontal lobe,the temporal lobe,and the ________ lobe.

The position of our body is reported by mechanoreceptors called ________.