Science Test 1 - Nervous System Flashcards

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1
Q

What is second function of the nervous system?

A

Coordinates response to changes

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2
Q

What is the term given to describe the whole process from sensory to interneuron to motor neuron?

A

A reflex arc

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3
Q

What is the gap between neurons called?

A

Synapses or synapse

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4
Q

What is a Relay Neuron?

A

Creates neural circuits that enable communication between sensory and motor neurons and the central nervous system

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5
Q

What is a nervous system tissue?

A

Nervous Tissue

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6
Q

What is a nervous system cell?

A

Neuron

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7
Q

What is a sensory neuron?

A

Carries messages from receptor cells in sense organs

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8
Q

What is stimuli or stimulus

A

Changes

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9
Q

What happens in reflexes?

A

The message travels to the spinal cord then gets turned around by an interneuron. This neuron sends the signal straight back out to the motor neuron, making the muscle move.

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10
Q

What is third function of the nervous system?

A

Transmits messages in form of electrical signals

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11
Q

What are the two categories of the PNS (Peripheral nervous system)

A

Somatic and Autonomic

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12
Q

What are effectors?

A

Muscles or glands that translate the messages into action

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13
Q

What is a nervous system organ?

A

Brain, spinal cord, nerves and sensory organ

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14
Q

What is first function of the nervous system?

A

Detects changes that impact the body

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15
Q

What is a motor neuron?

A

Carries messages from brain and spinal cord to effectors

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16
Q

How do neurons communicate?

A

Gap between neurons (synapase), and chemicals (neurotransmitters) diffuse across gap before next cell is stimulated.+

17
Q

What is Parasympathetic PNS?

A

Rest and digest (Slows down and relaxes the body, allowing it to rest)

18
Q

What is the human nervous system?

A

Communication system that controls all parts of body

19
Q

What are the two main parts of the human nervous system?

A

Central nervous system - brain, spinal cord and peripheral nervous system - cranial nerves, spinal nerves

20
Q

What is the central nervous system?

A

Control center of the body that provesses incoming messages from the environment

21
Q

What is Sympathetic PNS?

A

Flight/Fight/Freeze (Speeds up bodily processes)

22
Q

Cerebellum

A

Responsible for muscle control, including balance and movement

23
Q

Cerebrum

A

Initiates and coordinates movement and regulates temperature

24
Q

What is a reflex?

A

A reflex is when your body needs to respond very quickly

25
Q

Brain stem

A

Responsible for many vital functions of life

26
Q

Hypothalamus

A

Works directly on autonomic system to manage functions

27
Q

What is Autonomic?

A

Regulates automatic body function (heatbeat), Involuntary

28
Q

What is somatic?

A

Takes info to and from our CNS to respond to the environment (VOLUNTARY)

29
Q

What is the order of the stimulis response plan?

A

Stimulis, sensory neuron, brain (control centre), motor neuron, effector, response.

30
Q

What are the two parts of the autonomic PNS?

A

Sympathetic and parasympathetic

31
Q

Pituitary gland

A

Regulates growth metabolism and reproduction through the hormones it produces