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Flashcards in the nervous system Deck (13)
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1
Q

what makes up our central nervous system?

A

the brain and spinal cord

2
Q

what does the brain do?

A

it coordinates all of your body activities, made up of 100 billion neurons

3
Q

what is the largest part of your brain?

A

the cerebrum

4
Q

what does the cerebrum do?

A

it is where thinking occurs, impulses from the senses are interpreted, memory is stored, and movements are controlled

5
Q

what does the cerebellum do?

A

it is able to coordinate voluntary movements, maintain muscle tone, and help maintain balance.

6
Q

what does the medulla do?

A

it controls involuntary actions, breathing, heartbeat, blood pressure, also involved in sneezing, coughing, swallowing, and vomiting

7
Q

what are the two major divisions of the peripheral nervous system?

A

somatic and autonomic

8
Q

what does the somatic system do?

A

it controls voluntary actions, made up of cranial and spinal nerves

9
Q

what does the autonomic system do?

A

it controls involuntary actions, those not under conscious control

10
Q

what are the 3 main types of nerve cells?

A
  1. sensory neuron
  2. relay neuron
  3. motor neuron
11
Q

what does the sensory neuron do?

A

they are responsible for converting external stimuli from the organism’s environment into electrical impulses

12
Q

what does the relay neuron do?

A

they create neural circuits, enabling communication between sensory or motor neurons and the central nervous system

13
Q

what do motor neurons do?

A

they transmit from the brain and spinal cord to the muscles