nervous system

Algen Ipanag III · 37問 · 2年前

通報

問題一覧

this is the sequence of sensing the stimuli until the output

sensory input integration motor output

Composes the CNS

brain and spinal cord

composes the PNS

cranial and spinal nerves

other name for sensory

afferent

other name for motor

efferent

This is responsible for the pain we feel

free nerve ending

soft touch receptors

meissners corpuscle

Deep pressure receptors

lamellar corpuscle

This is the awareness of movement

proprioceptor

these are supporting cells in the cns

neuroglia

this is a barrier between capillary and neurons, controls permeability of capillary

Astrocyte

this neuroglia protects neurons from harmful substances and regulate the chemical environment

astrocyte

this neuroglia disposes debris, died brain cells and bacteria

microglia

These neuroglia line the central cavities of the brain and spinal cord

ependymal cell

The cilias of this neuroglia circulate csf that acts as a cushion

ependymal cell

these neuroglia are flat extensions wrapped tightly around nerve fibers producing myelin sheath CNS

oligodendrocyte

this neuroglia in the PNS are cells that form myelin sheath

schwann cell

these neuroglia are protective cushioning cells found in the PNS

satellite cell

these receive signal in the neuron

dendrite

these send signal in the neuron

axon terminal

in the CNS, what is a cluster of cell bodies called

nuclei

In the CNS, what is a cluster of nerve fibers/neuron process

tracts

In the PNS, what is a cluster of cell bodies

ganglion

In the PNS, what is a bundle of nerve fibers

nerves

this is the ability to respond to stimuli and convert them into neve impulse

irritability

this is the ability to transmit the impulses to other neurons, muscles, or glands

conductivity

CNS, four major regions

cerebral hemisphere diencephalon brain stem cerebellum

this region in the CNS is where precentral gyrus (motor) and postcentral gyrus (sensory) is found

cerebral hemisphere

this fiber tract connects the cerebral hemisphere

corpus callosum

this is responsible for voluntary motor activity regulator by modifying instructions in the cerebral hemisphere

basal nuclei

this region contains the thalamus, hypothalamus, and epithalamus, and located above the brain stem

diencephalon

this part in the diencephalon is a relay station for sensory impulses, pleasant or unpleasant

thalamus

in the diencephalon, this regulates body temp, water balance, metabolism, emotions, thirst, sex, it also produces hormones.

hypothalamus

this part in the diencephalon forms the roof, choroid plexus and csf production

epithalamus

this is a small thumb sized structure composed of the midbrain, pons, medulla oblongata

brain stem

this part in the brain stem, extends from mammillary bodies to pons, contains cerebral aqueduct, etc also involved in hearing and vision

midbrain

this part in the brain stem is below the midbrain, composed of fiber tracts and contain nuclei involved in breathing

pons

this is the most inferior part of the brain stem, it contains fiber tracts, center for heart rate, blood pressure, breathing, swallowing, vomiting

medulla oblongata

this is a subset of reticular formation, role in consciousness, awake sleep cycle, and sensory input filtering

reticular activating system

This part of the CNS is responsible for the precise timing for skeletal muscle activity, balance, coordination, and smooth body movements

cerebellum

lars of meninges from bone to brain

bone epidural space dura mater subdural space arachnoid mater subarachnoid space pia mater brain

this is a clean, watery fluid, surrounds and protects the brain and spinal cord. Produced at choroid plexus

cerebrospinal fluid

how much csf is produced and drained

150ml

this is a cylindrical structure from the foramen magnum to the base of the skull to the first or second lumbar vertebra

spinal cord

how long is the spinal cord in the average adult

17 inches

how many pairs of spinal nerves

this carries sensory information from the body to the brain

spinal cord

at inferior end of vertebral column, nerve roots resembling a horse's tail called

cauda eguina

PNS, this is responsible for transmitting signals between CNS and pars of the body

nerves

these are bundles of neuron fibers and connective tissue

nerves

a single nerve fiber protective covering

endoneurium

groups of neuron fibers are bundled and covered by

perineurium

covers the entire bundles of fascicle

epineurium

this carry both sensory and motor fibers = all spinal nerves

mixed nerves

this carry impulses towards CNS

sensory

this carry motor fibers

motor

how many pairs of cranial nerves in the head and neck regions

cranial nerve x, only one pair extends beyond the head and the neck and also called

vagus nerve

often referred to as the fight or flight system

sympathetic

often referred to as the rest and digest system

parasympathetic

this maintain homeostasis, controls involuntary bodily functions

autonomic nervous system

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