Discuss sensory receptor input to the CNS Flashcards Preview

HAP2 - Neurophysiology (Part 1) > Discuss sensory receptor input to the CNS > Flashcards

Flashcards in Discuss sensory receptor input to the CNS Deck (26)
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1

Central Nervous System (2)

Brain and Spinal Cord

2

Peripheral Nervous System (2)

Motor Neurons and Sensory Neurons

3

Motor Neurons (2)

CNS to muscles and glands
Somatic and Autonomic Nervous System

4

Autonomic (2)

Involuntary responses - sympathetic or parasympathetic

5

Functions of the Nervous System (5)

Stimuli
Sensory input
Integration (brain and spinal cord)
Motor output
Effector (muscles)

6

Sensory receptors (explained)

Stimuli stimulates sensory receptors to generate an action potential which is sent to the parietal lobe to be integrated

7

Integration (explained - 3)

Action potential received within parietal lobe
Detects which stimuli caused action potential
Bases decision on prior knowledge and experienced stored.

8

Motor output (explained - 3)

Motor neurons reach muscles/glands, muscles or gland contracts, causing bones to move, causing body part to move

9

Effectors - 3 muscles 2 glands

Skeletal muscle
Smooth muscle
Cardiac muscle
Endocrine gland
Exocrine gland

10

Sensory receptor function (2)

Responds to changes in environment
Responds to stimuli

11

3 different type of stimulus

Chemical
Pressure
Light

12

Mechanoreceptors

Respond to mechanical forces; touch, pressure, vibration etc

13

Thermoreceptors

Respond to temperature changes

14

Photoreceptors

Respond to light
Found on the retina

15

Chemoreceptors

Respond to chemical changes (taste or smell)

16

Nocireceptors

Respond to damaging stimuli that result in pain

17

Exteroceptors

Detect stimuli coming from the external environment

18

Visceroceptors

Detect chemical changes, tissue stretch and temperature located on visceral organs

19

Proprioceptors

Within skeletal muscles, tendons, joints, ligaments, connective tissue etc

20

Muscle spindles (3)

Found in skeletal muscle, detects muscle stretch and initiates a reflex that resists the stretch

21

Tendon organs (3)

Bundle of tendon fibres that prevent the stretching of tendon by initiation the relaxation of a muscle

22

Joint receptor (3)

Monitor the stretch or the synovial joint provides information of joint position and movement

23

Hearing receptor (2)

Hair cells, found within the cochlea in the ear

24

Multipolar

Sensory neuron

25

Bipolar

Effector neuron

26

Unipolar

Motor neuron