Anatomy Fill in the Blank

list and explain the three general functions of the nervous system

1. gathers information called sensory input 2. processes and interprets the sensory input and decides what should be done at each moment called integration 3.effects, or causes, a response by activating muscles or glands via motor output

the number of neurons involved in transmission of impulses in the autonomic nervous system is ______

12

there are _____ pairs of cranial nerves and _______ pairs of spinal nerves in the peripheral nervous system

12, 31

the disease that results from problems with the basal nuclei resulting in difficulties with voluntary muscle movements is called _____________

Huntington disease

___________ cells form the myelin sheaths around nerve fibers in the PNS

Schwann

Cells found in the CNS that cling to neurons and anchor them to blood vessels are called _________

astrocytes

_______________ reflexes include the secretion of saliva, changes in the size of our pupils, and digestion involve the activities of smooth muscles

autonomic

neurons with two processes, an axon and a dendrite, are structurally classified as __________ neurons

bipolar

one of the major functions of the pons is to control __________

breathing

cranial nerve III is known as the ________ nerve

calomotor

cerebrospinal fluid is formed from blood by the ________________

choroid plexuses

a __________________ is a type of traumatic brain injury that results in marked tissue destruction

contusion

the large fiber tract that allows communication between the two cerebral hemisphere is called the _______________

corpus callosum

the thalamus, hypothalamus, and epithalamus collectivity constitute the

diencephalon

the primary motor area, located in the ___________ lobe of the cerebral cortex, allows us to consciously control our skeletal muscles

frontal

one of the last areas of the CNA to mature is the ______________, regulates body temperature

hypothalamus

a functional property of nervous tissue called __________ is the ability to respond to a stimulus and convert it into a nerve impulse

irritability

the fissure in the brain that separates the two cerebral hemispheres is called the _____________

longitudinal tissue

the brain and spinal cord are protected and cushioned by three connective tissue membranes that are collectively called

meninges

the cell bodies of the _________- neurons are always located within the CNS

motor

support cells in the central nervous system are collectively called _______________

neuroglia

the gaps between Schwann cells found at regular intervals in peripheral system neurons are called ______

nodes of ranvier

the _____________ division of the autonomic nervous system is often called "rest and digest" division

parasympathetic

spinal nerves and cranial nerves are considered part of the __________ nervous system

peripheral

the hypothalamus regtulates the ________________ gland

pituitary

sensory receptors located in muscles and tendons are termed

proproloceptors

each spinal nerve divides into a dorsal and a ventral ___________

rami

the portion of the diencephalon that acts as a relay station for sensory impulses traveling to the sensory cortex is the _____________

thalamus

bundles of nerve fibers (neuron processes) running through the CNS are called __________, whereas in the PNS they are called _______________

tracts, nerves

the only pair of cranial nerves to extend to the thoracic and abdominal cravities is the ___________ nerves

vagus