NEURO01 Flashcards

(80 cards)

1
Q

Is made up of vast neural networks; signaling enables thinking, language, feeling, learning, memory and all function and sensation

A

NERVOUS SYSTEM

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2
Q

What are the components of the nervous system?

A

CENTRAL NERVOUS SYSTEM
PERIPHERAL NERVOUS SYSTEM

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3
Q

Consists of the brain and spinal cord

A

CNS

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4
Q

Consist of 12 pairs of cranial nerves and 31 pairs of spinal nerves

A

PNS

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5
Q

What are the 2 division of the peripheral nerves?

A

SOMATIC DIVISION
AUTONOMIC DIVISION

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6
Q

Division of the peripheral nerves that communicates with the skin and skeletal muscles

A

SOMATIC DIVISION

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7
Q

Division of the peripheral nerves thaat communicates with the smooth muscles, heart muscle, and glands

A

AUTONOMIC DIVISION

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8
Q

What are the cells of the nervous system?

A

NEURON
MYELIN SHEATH
SCHWANN CELL
NODES OF RANVIER
AXONAL TERMINAL
ACTION POTENTIAL IN THE NS

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9
Q

Receives impulses to and from the brain

A

NEURON

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10
Q

Small tree-like structures that receive electrochemical messages

A

DENDRITE

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11
Q

Spherical that enclose and protect the nucleus, most of which are located within the CNS

A

CELL BODY

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12
Q

Long transmitting processes that carry electrical impulses away from the cell body

A

AXON

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13
Q

What are the parts of the neuron?

A

NUCLEUS/CELL BODY
DENDRITE
AXON
SHCWANN CELLZ
NODE OF RANVIER
AXON TERMINALS
ETC.

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14
Q

Types of neuroglia in the CNS?

A

ASTROCYTES
EPENDYMAL CELLS
MICROGLIA
OLIGODENDROCYTES

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15
Q

Have numerous processes that give the cell a starshaped appearance. They maintain the ion balance around neurons and control the exchange of materials between blood vessels and neurons

A

ASTROCYTES

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16
Q

Line the fluidfilled cavities of the brain and spinal cord

A

EPENDYMAL CELLS

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17
Q

Are phagocytic macrophages that provide a protective function by engulfing microorganisms and cellular debris

A

MICROGLIA

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18
Q

Have fewer processes than astrocytes. They wrap these cytoplasmic processes around neurons to create an insulating barrier called myelin sheath

A

OLIGODENDROCYTES

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19
Q

A white lilid substance that surrounds the axon of some nerve cells, forming an electrically insulating layer.

A

MYELIN SHEATH

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20
Q

Production of myelin sheath is called?

A

MYELINATION

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21
Q

In the PNS, produces the myelin sheath around neuronal axons

A

SCHWANN CELL

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22
Q

Periodic gap in the insulating sheath on the axon of certain neurons that serves to facilitate the rapid conduction of the nerve impulses

A

NODES OF RANVIER

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23
Q

Specialized to release the neurotransmitters of the presynaptic cell

A

AXONAL TERMINAL

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24
Q

Impulses that allow a neuron to communicate with other neurons and body cells

A

ACTION POTENTIAL IN THE NS

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25
MAJOR NEUROTRANSMITTERS WITH THEIR GENERAL CHEMICAL CLASSES
AMINES CATECHOLAMINES AMINO ACIDS POLYPEPTIDES
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Examples of amines
SEROTONIN ACETYL(BUT ACETYLCHOLINE IN ORIG)
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Example of catecholamines
DOPAMINE NOREPINEPHRINE EPINEPHRINE
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Examples of amino acids
GABA GLUTAMATE GLYCINE
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Examples of polypeptides
ENKEPHALIN ENDORPHIN
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Produced in stressful situations, increases HR and blood flow leading to physical boost and heightened awareness
ADRENALINE
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Calms firing nerves in the CMS. High levels improves focus, low levels cause anxiety. Also contributes to motor control and vision
GABA(CALMING)
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Affects attention and responding actions in the brain. Contracts blood vessels increasing blood flow
NORADRENALINE
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Involved in thought, learning and memory. Activates muscle action in the body. Also associated witg attention and awakening
ACETYLCHOLINE(LEARNING)
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Feelings of pleaseure, also addiction, movement and motivation. People repeat behaviors that lead to dopamine release
DOPAMINE(PLEASURE)
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Most common neurotransmitter involved in learning and memory, regulates development and creation of nerve contracts
GLUTAMATE
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Contributes to well being and happiness. Helps sleep cycle and digestive sytem regulation. Affected by exercise and light exposure
SEROTONIN( MOOD)
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Released during exercise, excitement and sex producing well being and euphoria reducing pain.
ENDORPHINS(EUPHORIA)
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Known as the seat of intelligence. Ability to read, write, speak,calculations,memory
CEREBRUM
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Deep groves dividing the surface of the cerebrum
FISSURES
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Surface of the cerebrum, the gray outer layer about 2 to 4 mm thick
CEREBRAL CORTEX
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Thick band of nerve fibers that connects the left and right hemisphere allowing communication between them
CORPUS CALLOSUM
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Controls movements of voluntary muscles, concentration, abstract thought, info storage, or memory and motor function, brocas area
FRONTAL LOBE
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Interprets sensory nerve impulses( pain, temp, touch), maintains proprioception, recognition of size, texture ans shape or objects.
PARIETAL
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Receives and interprets olfactory and auditory stimuli, wernickes area
TEMPORAL LOBE
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Receives and interprets visual stimuli, controls ability to understand written words.
OCCIPITAL LOBE
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Acts as a switching center for nerve messages, the relay center of all semsory input, serves as sorting, processing, and relay station for input into the cortical region
THALAMUS
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Inferior to the thalamus, regulates temperature, water metabolism, appetite, emotional expression, thirst, sleep-wake cycle
HYPOTHALAMUS
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Forms the dorsal part of the diencephalon and includes the pineal body, which plays a role in endocrine that affects growth and development
EPITHALAMUS
50
Controls other endocrine glands in the body and secretes hormones that control sexual development, promote bone and muscle growth, respond to stress and fight diseases
PITUITARY GLAND
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Helps regulate the body's internal clock and circardian rhythm by secreting melatonin
PINEAL GLAND
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Sense of smell
OLFACTORY
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Vision
OPTIC
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Eyeball movements, pupillary constriction, raising upper eyelid
OCULOMOTOR
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Eyeball movement(superior oblique eye muscle)
TROCHLEAR
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Sensation of upper scalp, upper eyelid,nose, nasal cavity, cornea, lacrimal gland, sensation of upper teeth, cheek, top lip, lower eyelid, and scalp, tongue, lower teeth, mastication(chewing)
TRIGEMINAL
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Lateral movement of the eyeball
ABDUCENS
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Facial expression and muscle movement, salivation and taste sensation, secretion of nasal, lacrimal, submandibular and sublingual glands
FACIAL
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Sense of hearing and equilibrium
ACOUSTIC
60
Swallowing, gag reflex, secretions of parotid, salivary glands, sense of touch, taste, pressure sensation in pharynx and tongue
GLOSSO-PHARYNGEAL
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Swallowing, regulation of cardiac rate, and respirationz, digestion, sensation, from thoracic and abdominal organs, sense of taste
VAGUS
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Head and neck movement, proprioception,
ACCESSORY
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Movement of tongue for speech and swallowing
HYPOGLOSSAL
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Outermkst layer and covers brain and spinal cord
DURA MATER
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Middle layer, extremely thin delicate membrane that closely resembles a spider web
ARACHNOID
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Innermost, thin layer that hugs the brain closely
PIA MATER
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Protects the brain cells from harmful subsyances and pathogens
BBB
68
In this system are the hypothalamus, amygdala, hippocampus
LIMBIC SYSTEM
69
Regulates cyclical motor functions like respiration, walking and chewing
RETICULAR SYSTEM
70
Center for conducting messages to and from the brain and as a reflex center
SPINAL CORD
71
Responsible for receiving and transmitting info from and about the external environment
PNS
72
It runs from sensory organs to CNS (brain and spinal cord)
SENSORY(AFFERENT)
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Pass info received from tje brain thru the spinal tracts to the skeletal muscles to direct precise voluntary movements
MOTOR(EFFERENT(
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A mixed nerve which carries motor, sensory, and autonomic signals between the spinal cord and the body
SPINAL NERVES
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They originate in the forebrain and brain stem
CRANIAL NERVES
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AKA general visceral motor system( heart, lungs, blood vessels, digestive organs, and glands
ANS
77
Prepares the body to handle situations that are perceived as harmful or stressful
Sympathetic NS
78
Operates during non stressful situations
Parasympathetic NS
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