Anatomy nervous system quiz

Releases neurotransmitters

axon terminal

after head injury, retention of water by brain

cerebral edema

Total nonresponsiveness to stimulation

coma

Slight and transient brain injury

concussion

Demonstrate irritability and conductivity, and thus transmit electrical messages from one area of the body to another area

neurons

Release neurotransmitters

neurons

clustered ribosomes and rough ER (endoplasmic reticulum)

Nissl bodies

support, insulate, and protect cells

neuroglia

location of the nucleus

neuron cell body

Are amitotic

neurons

Peripheral Nervous System (PNS)

1. Composed of the cranial and spinal nerves/ganglia 2. serves as communication lines 3. Links all parts of the body to the CNS.

List the minimum elements in a reflex arc

1. Stimulus 2. Receptor 3. Afferent neuron 4. Efferent neuron 5. Effector muscle/organ

results when a brain region is deprived of blood or exposed to prolonged ischemia

Cerebrovascular Accident (CVA)

Central Nervous System (CNS)

1. consists of the brain and spinal cord 2. Interprets incoming information and issues orders

Three major functions of the nervous system

1. sensory input (monitors and gather information) 2. integration (processes and interprets info) 3. motor output (causes a response)

progressive degeneration of the brain with abnormal protein deposits

Alzheimer's disease

Generally conducts impulses AWAY from the cell body

Axon

a ministroke; fleeting symptoms of a CVA

Transient Ischemic Attack (TIA)

traumatic injury that destroys brain tissue

contusion

conducts local electrical currents toward the cell body

dendrite

May cause medulla oblongata to be wedged into foramen magnum by pressure of blood

intracranial hemorrhage

Autoimmune disorder with extensive demyelination

multiple sclerosis

Increases the speed of impulse transmission

myelin sheath

Able to divide; therefore are responsible for most brain neoplasms

neuroglia

autonomic nervous system (ANS)

regulates the activities of the heart and smooth muscle, and of glands — is also called the INVOLUNTARY NERVOUS SYSTEM

Somatic nervous system

the division of the peripheral nervous system that controls the voluntary activities (such as the activation of the body's skeletal muscles)