anatomy chapter 7 part 2

where does the cerebrospinal fluid circulate through?

arachnoid space, ventricles, and central canal of spinal cord

what are the parts of the central nervous system

brain and spinal cord

what part of the brain functions as: involved in our ability to speak

brocas area

what part of the brain functions as: Controls balance and equilibrium Provides precise timing for skeletal muscle activity and coordination of body movements

cerebellum

what part of the brain functions as: speech, memory, logical and emotional responses, consciousness, the interpretation of sensation, and voluntary movements

cerebral

what part of the brain function as: - conducting impulses toward the cell body (many short extensions_ - neurons may have hundreds of these

dendrites

what are the layers of meninges ?

dura mater, arachnoid layer, pia mater

Forms the roof of the third ventricle Houses the pineal body (an endocrine gland) Includes the choroid plexus: forms cerebrospinal fluid

epithalamus

Under the thalamus Important autonomic nervous system center Helps regulate body temperature Controls water balance

hypothalamus

what part of the brain functions as: -- chief integration center of autonomic (involuntary) nervous system - regulates body temp., food intake, water balance, and thirst - regulates hormonal output of anterior pituitary gland and acts as an endocrine organ

hypothalamus

To process and interpret sensory input and decide whether action is needed

integration

The lowest part of the brain stem Merges into the spinal cord Includes important fiber tracts Contains important control centers Heart rate control Blood pressure regulation Breathing Swallowing Vomiting

medulla oblongata

what part of the brain functions as: -Contains important control centers Heart rate control Blood pressure regulation Breathing Swallowing Vomiting

medulla oblongata

Composed of mostly tracts of nerve fibers Two bulging fibers tracts, cerebral peduncles, convey ascending and descending impulses Four rounded protrusions, corpora quadrigemina visual and auditory reflex centers

midbrain

what are the parts of the brain stem

midbrain, pons, medulla oblongata

A response to integrated stimuli The response activates muscles or glands.

motor output

what part of the brain functions as: Irritability Ability to respond to a stimulus and convert it to a nerve impulse Conductivity Ability to transmit the impulse to other neurons, muscles, or glands

neurons

what part of the brain functions as: - internal layer - clings to the surface of the brain

pia mater

The bulging center part of the brain stem Mostly composed of fiber tracts Includes nuclei involved in the control of breathing

pons

what part of the brain functions as: - relays informtion from cerebrum to cerebellum - cooperates w medullary centers to control respiratory rate and depth - contains nuclei of cranial nerves; contains protection fibers

pons

gathering information To monitor changes occurring inside and outside the body Changes = stimuli

sensory input

how does the nervous system work?

sensory input, integration, motor output

what part of the brain functions as: - receives impulses from bodys sensory receptors - pain, temp., light, touch - located in parietal lobe

somatic sensory

what part of the brain functions as:

spinal fluid

Surrounds the third ventricle The relay station for sensory impulses Transfers impulses to the correct part of the cortex for localization and interpretation

thalamus

what part of the brain functions as: - relays sensory impulses to cerebral cortex - relays impulses between cerebral motor and cortex and lower motor centers - involved in memory

thalamus

what are the parts of diencephalon

thalamus, hypothalamus, epithalamus

______ neurons are involved in the transmission of impulses in the autonomic nervous system

two

where on the vertebrae does the spinal cord end?

vertebra L1 or L2