Topic 7 Flashcards Preview

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Flashcards in Topic 7 Deck (42):
1

Nervous system functions

Sensory
Integrative
Action
Information storage (memory)

2

Senses changes of external environment
Senses changes of internal (body) environment

Sensory

3

Interprets internal and external changes, takes action

Integrative

4

Control of motor movements (muscles)
Control of endocrine and glandular secretion
Regulation of homeostasis

Action

5

Two subdivision of Nervous system

Central nervous system (CNS)
Peripheral nervous system (PNS)

6

Two parts of the CNS

Brain
Spinal Cord

7

Parts of the PNS

Cranial, Spinal Nerves, ganglia
Somatic Nervous System
Autonomic Nervous System (ANS)

8

Incoming sensory information

Afferent

9

Outgoing motor signals

Efferent

10

Motor signals to muscles, voluntary

Somatic nervous system

11

Autopilot for the body: signals to smooth muscle, cardiac muscle and glands

Autonomic Nervous System

12

Two parts of the ANS

Sympathetic Nervous System
Parasympathetic Nervous System

13

Stimulates organs during stress: fight or flight response; high set point

Sympathetic system

14

Stimulates organs for normal function; repair/repose and rest/digest; low set point

Parasympathetic System

15

Functional unit, produce electrical signals called action potentials

Neuron

16

Electrical stimuli in the nervous system

Action potentials

17

Nucleated cell body

Perikaryon

18

Nerve fibers that transmit outgoing stimuli

Axon

19

Fiber like extensions that receive incoming stimuli

Dendrite

20

Parts of the neuron

Perikaryon
Nissel Substance (RER)
Axon
Dendrite

21

Support of neurons,

Neuroglia cells

22

These cells provide structure and nutrition

Astrocytes or Satellite Cells

23

Structure and nutrition cells found in the CNS

Astrocytes

24

Structure and nutrition cells found in PNS

Satellite cells

25

These cells produce a fatty substance called myelin that surrounds axons

Oligodendrocytes or Schwann cells

26

Myelination cells in the CNS

Oligodendrocytes

27

Myelination cells in the PNS

Schwann cells

28

These cells provide immune system support and are embedded in the brain and spinal cord (CNS)

Microglia

29

These cells secrete cerebral spinal fluid and they are found in the CNS

Ependymal cells

30

Collections of nerve cell bodies or perikaryon, dendrites, axon terminals, bundles of un myelinated axons and neuroglia

Grey matter

31

Connections of myelinated axons

White matter

32

In the spinal cord (grey and white matter)

Grey matter on inside forms a butterfly surrounded by white matter

33

5 brain divisions

Telecephalon
Diencephalon
Mesencephalon
Metencephalon
Myelincephalon

34

The brain produces and is surrounded by

Cerebral spinal fluid (csf): produces by choroid plexus

35

Control center for feeding, thirst, temp control, endocrine control

Hypothalamus

36

Helps coordinate sleep wake cycle

Pituitary gland

37

Helps coordinate complex motor movements

Cerebellum

38

Control of basal functions (bp, heart rate, respiration rate)

Medulla Oblongata

39

Right hand control
Language skills
Numeric scientific skills
Reasoning

Left brain

40

Left hand control
Music and artistic skills
Imagination
Spacial relationships
mental images of sight, sound, touch, taste, smell

Right brain

41

Coordinates head and neck movement

Superior Colliculi

42

Coordinates vision, sound, hearing with body movements

Inferior colliculi