Contains the nucleus of a neuron.

Secrete neurotransmitters.

Controls emotion, social judgment, and decision making.

Conducts nerve impulses toward the cell body.

Lies between the arachnoid mater and pia mater.

Insulates the neuron.

Contains fibers that carry sensory information into the spinal cord.

Carries cerebrospinal fluid through the spinal canal.

Excitable, impulse-conducting cells that perform the work of the nervous system.

Responsible for analyzing and interpreting visual information.

Responsible for hearing, smelling, and visual recognition.

The innermost layer of the meninges.

Supportive cells of the nervous system.

Small space between the outer covering of the spinal cord and the vertebrae.

Responsible for the interpretation of touch, temperature, and pain.

Contains fibers that carry motor information out of the spinal cord.

Tough outer layer of the meninges.

A single nerve that contains both motor and sensory fibers.

Increases alertness.

Decreases heart rate.

Constricts bronchial tubes.

Stimulates sweat glands.

Causes “resting and digesting” state.

Stimulates secretion of thin salivary mucus.

Stimulates secretion of thick salivary mucus.

Has no effect on the urinary bladder or internal sphincter.

Inhibits intestinal motility.

Has no effect on adrenal medulla.

Increases heart rate.

Has no effect on blood vessels of the skeletal muscles.

Stimulates adrenal medulla to secrete epinephrine.

Causes “fight-or-flight” response.

Has no effect on sweat glands.

Stimulates bladder wall to contract and the internal sphincter to relax to cause urination.

Dilates bronchial tubes.

Stimulates intestinal motility.

Has a calming effect.

Dilates blood vessels of skeletal muscles to increase blood flow.

The division of the nervous system that carries signals from nerve endings to the central nervous system is the:

The central nervous system includes the:

The blood-brain barrier primarily consists of which type of nerve cell?

When you touch something hot, the type of neurons that send impulses allowing you to withdraw your hand are:

The type of neuron that has one axon and multiple dendrites is a:

What are the consequences if a nerve lacks a neurilemma?

Which statement about neurotransmitters is true?

To perform a lumbar puncture, physicians insert a hollow needle into the subarachnoid space between the third and fourth lumbar vertebrae and remove a sample of cerebrospinal fluid. Why do you think they choose this location for the procedure?

Gray matter primarily contains

White matter appears white because of

Which portion of the brain contains the midbrain, pons, and medulla oblongata?

An injury to which part of the brain is most likely to impair reasoning and cause socially inappropriate behavior?

Multipolar neurons have one axon and multiple dendrites.

Interneurons connect incoming sensory pathways with outgoing motor pathways.

The neurilemma is the outermost layer of myelin sheath in the peripheral nervous system.

When a neuron’s cell membrane is polarized and contains an abundance of sodium on the inside and an abundance of potassium on the outside, the cell is unable to react to a new stimulus.

The intensity of pain depends on the number of fibers stimulated.

Slow pain fibers are congretated on deep body organs and produce a dull, aching pain.

Fast pain fibers are abundant in the skin and mucous membranes, and produce a sharp, localized pain at the time of injury.

Pain signals travel up the spinal cord along both the spinothalamic tract and the spinoreticular tract.

Taste buds send gustatory impulses to the brain by way if either the facial, Glossopharyngeal, or vagus nerves.

Odor molecules entering the nasal cavity bind to cilia projecting from the ends of olfactory receptor cells.

Respond to tissue damage; also known as pain receptors.

A ring of colored muscle that works to adjust the diameter of the pupil.

Respond to factors such as pressure or stretch that change the position of a receptor.

A thin layer of light-sensitive cells that make up the neural inner layer.

Allow you to orient your body in space and to know the position of your body parts.

Highly vascular tissue layer that supplies oxygen and nutrients to the retina and sclera.

React to various chemicals, including odors and tastes.

Outermost layer of the eye.

Respond to light; found only in the eye.

Large eye cavity filled with vitreous humor.

Drains aqueous humor from the anterior chamber.

Sits over the iris and admits light into the eye.

Secretes aqueous humor.

Changes shape for near and far vision.

Endocrine glands are ductless glands that secrete a hormone into the bloodstream. The endocrine system responds slowly to stimuli, exerts long-lasting effects, and adapts slowly to what?

What is the mechanism whereby one endocrine gland stimulates another endocrine gland to secrete a hormone, which, in turn, causes the first endocrine gland to stop production of its hormone?

What does the pineal gland secrete?

Hypersecretion of thyroid hormone may result in what disorder?

Which cells secrete the hormone insulin?

The anterior pituitary consists of ____ tissue and is called the adenohypophysis.

The more ____ a cell has, the more sensitive it will be to a hormone.

The posterior pituitary consists of ___ tissue and is called the neurohypophysis.

The posterior pituitary consists of neural tissue and is called the

The cells of the ovarian follicle secrete the hormone

The adrenal medulla consists of modified neurons; these cells secrete

A diminished number of insulin receptors results in a disorder called

The middle layer of the adrenal cortex is called the zona _____; it secretes glucocorticoids.

The middle layer of the adrenal cortex is called the zona fasciculata; it secretes

The cells of the pancreas that secrete ____ are called beta cells.

Vasopressin is another name for _____ hormone.