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Science Physics 8th Grade > The Nervous Test > Flashcards

The Nervous Test Flashcards

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0
Q

Meninges

A

Three layers of protective tissue in the brain and spinal cord
(Dura matter, arachnoid matter, and pis matter) in the brain and spinal cord

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1
Q

Brainstem

A

Responsible for involuntary actions such as breathing and heart rate
Also sends information from PNS to the brain

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2
Q

Cerebral spinal fluid

A

Fluid found in the meninges that cushions the brain and spinal cord. Blood vessels provides nourishment and removes waste from the spinal cord

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3
Q

Paralysis

A

Loss of muscle function for one or more muscles. Mostly due to injury to nervous system

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4
Q

CNS

A

Interneurons

Consists of the spinal cord and brain

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5
Q

PNS

A

Two divisions sensory and motor

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6
Q

Motor division

A

Motor neurons
Somatic devoid system
Autonomic nervous system
Reflex

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7
Q

Somatic nervous system

A

Motor neurons in this division carry out voluntary movements

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8
Q

Autonomic nervous system

A

Motor neurons in this division carry out involuntary actions

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9
Q

Reflex

A

An unconscious response to a stimulus such as pupil dilation, knee-jerk, ect.

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10
Q

Stimulus

A

What causes the nervous system to respond

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10
Q

Receptor

A

What receives the stimulus

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10
Q

Effector

A

What responds to the stimulus (always a muscle or gland)

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10
Q

Dendrites

A

Takes signals to cell body

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10
Q

Cell body

A

Houses the nucleus and other organelles

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10
Q

Axon

A

Takes signals/impulses away from cell body

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10
Q

Synapse

A

Space between neurons

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10
Q

Myelin

A

Substance that covers the axon; speeds up impulse and protects axon

10
Q

Sensory neuron

A

Picks up internal or external stimuli and coverts it to a nerve

10
Q

Interneuron

A

Brain/spinal cord. Takes impulse and interprets it, decided if further action should be taken, then sends a message

11
Q

Motor neuron

A

Sends impulse to a muscle or gland, the muscle contracts or releases a hormone

12
Q

Gray matter

A

Cell body

13
Q

White matter

A

Axon

14
Q

Cerebrum

A

Responsible for thought, feelings, learning, ect.

15
Q

Cerebellum

A

Responsible for coordination of movements and balance

16
Q

Cerebrospinal fluid

A

Found in the meninges. It cushions the brain. Blood vessels nourish and remove waste

17
Q

Reflex pathway

A

Sensory neuron–> Interneuron in spinal cord–> motor neuron

18
Q

Pathway impulse takes down neuron

A

Dendrite–>cell body–>axon–>axon tip–>synapse–>dendrite of another neuron or a muscle or gland

19
Q

Pathway impulse takes from stimulus to effector

A

Stimulus–>receptor–>sensory neurons–>Interneurons–>motor neurons–>effector

20
Q

Pathway of light through the eye

A

Cornea–>aqueous humor–>pupil–>lens–>vitreous humor–>retina–> optic nerve

21
Q

Sclera

A

Tissue that makes up outer surface of the eye

22
Q

Iris

A

Eye color. Muscle in the iris regulates the size of the pupil do it regulates amount of light coming into the eye

23
Q

Cornea

A

Protection and initial focus of light coming into eye

24
Q

Pupil

A

Opening in the center if the eye of the iris that’s let’s light interior of the eye

25
Q

Lens

A

Located behind the pupil and is responsible for flipping the image (upside down) before it reacted the retina

26
Q

Retina

A

Back of eye. The receptor cells cons and rods
Cones: light and being able to see at night
Rods: color vision

27
Q

Optic nerve

A

Sensory neuron in eye that brings information to the brain

28
Q

Aqueous humor

A

Supplies lens, iris, and cornea with nutrients and oxygen, carried off waste

29
Q

Vitreous humor

A

Chamber behind the lens. Substance that gives the eye it’s shape

30
Q

Gray matter

A

Cell body

31
Q

White matter

A

Axon

32
Q

What is the spinal cord composed of?

A

Bundle of Interneurons

33
Q

Fight or flight

A

Autonomic

Science Physics 8th Grade (12 decks)

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