Lesson 7

Question 1

The _______ is widely distributed in the body and involves most organs.

Answer 1

nervous system

Question 2

All of our actions, thoughts and emotions can be boiled down into three
principal functions – sensory input , integration and motor output.

Answer 2

SENSORY – INTEGRATION – MOTOR OUTPUT

Question 2

SENSORY INPUT
* Special Senses
* Eyes -

Answer 2

Sight

Question 3

SENSORY INPUT
* Special Senses
* Nose -

Answer 3

Smell

Question 4

SENSORY INPUT
* Special Senses
* Tongue -

Answer 4

Taste

Question 5

SENSORY INPUT
* Special Senses
* Ear -

Answer 5

Hearing

Question 6

SENSORY INPUT
* Special Senses
* Skin –

Answer 6

Touch

Question 7

The nervous system processes that input, and decides what should be done
about it.
“Fight or flight

Answer 7

INTEGRATION

Question 7

The response that occurs when your nervous system activates certain parts of
your body

Answer 7

MOTOR OUTPUT

Question 7

TWO MAIN CATEGORIES OF NERVOUS SYSTEM

Answer 7

1. Central Nervous system
2. Peripheral Nervous system

Question 8

MAIN CATEGORIES OF NERVOUS SYSTEM
brain and spinal cord

Answer 8

. Central Nervous system

Question 8

MAIN CATEGORIES OF NERVOUS SYSTEM
Nerves

Answer 8

. Peripheral Nervous system

Question 9

MAIN CATEGORIES OF NERVOUS SYSTEM
picks up sensory stimuli

Answer 9

Sensory Division / Afferent

Question 10

MAIN CATEGORIES OF NERVOUS SYSTEM
sends signals from the CNS (brain & spinal
cord) to the rest of the body

Answer 10

Motor Division / Efferent

Question 11

MAIN CATEGORIES OF NERVOUS SYSTEM

voluntary

Answer 11

Somatic

Question 12

MAIN CATEGORIES OF NERVOUS SYSTEM

involuntary

Answer 12

Autonomic

Question 13

MAIN CATEGORIES OF NERVOUS SYSTEM

fight or flight

Answer 13

Sympathetic

Question 14

MAIN CATEGORIES OF NERVOUS SYSTEM
Heart beat, peristalsis (movement of intestine
muscles)

Answer 14

Parasympathetic

Question 15

TWO MAIN CELLS

Answer 15

Neuron
Microglial / Neuroglia / Glial
cells

Question 16

receive stimuli and
send signals

Answer 16

Neuron

Question 17

protects, nourishes,
insulates and helps the neuron
send signals

Answer 17

Microglial / Neuroglia / Glial
cells

Question 18

GLIAL CELL TYPES
Central Nervous System

Answer 18

1. Astrocytes
2. Microglial cells
3. Ependymal cells
4. Oligodendrocytes

Question 18

GLIAL CELL TYPES
Peripheral Nervous System

Answer 18

1. Satellite cells
2. Schwann cells

Question 18

• Most abundant glial cells

Answer 18

ASTROCYTES

Question 19

* Provide immune defense for against invading microorganisms in the brain and spinal cord

Answer 19

MICROGLIAL CELLS

Question 20

* Create, secrete and circulate CSF (Cerebrospinal fluid)

Answer 20

EPENDYMAL CELLS

Question 20

Produce an insulating barrier called myelin sheath

Answer 20

OLIGODENDROCYTES

Question 20

Surround and support neuron cell bodies

Answer 20

SATELLITE CELLS

Question 20

Wrap around axons and produce an insulating barrier called myelin sheath

Answer 20

SCHWANN CELLS

Question 21

1. Longest lived cells

Answer 21

NEURONS

Question 23

* Cell body * Life support * Contains organelles such as nucleus and mitochondria

Answer 23

SOMA

Question 23

* Pick up signals and convey them to the soma

Answer 23

DENDRITES

Question 24

* Long extension * Transmit electrical impulses away from the cell body to the other cells

Answer 24

AXON

Question 25

These contain three or more processes from the soma including one axon and several dendrites.

Answer 25

MULTIPOLAR NEURON

Question 25

________ have two processes one axon and one dendrite extending from the soma. Can be found in retina of the eye

Answer 25

BIPOLAR NEURON

Question 26

_______neurons have only one process. Usually seen in sensory receptors.

Answer 26

UNIPOLAR NEURON

Question 26

_________ pick up sensory stimuli from sensory receptors (skin, eyes) and sends them towards the CNS. Most sensory neurons are _________

Answer 26

Sensory or Afferent neurons unipolar

Question 27

Association neurons which live within the CNS These transmit signals or impulses between sensory and motor neurons

Answer 27

INTERNEURONS

Question 27

___________ signals from the CNS (brain) to the rest of the body (muscles or glands). Most abundant Mostly multipolar

Answer 27

Motor or efferent neurons sends