Nervous System

Question 1

Central Nervous Sytem

Answer 1

Brain and spinal cord

Question 2

Peripheral Nervous System

Answer 2

Cranial and Spinal Nerves

Question 3

Sensory Input

Answer 3

Specialised nerve cells called sensory neurons collect information and transmit impulse

Question 4

Integration

Answer 4

The CNS processes the input

Question 5

Motor output

Answer 5

The PNS sends out impulses through motor nerves to muscles, glands and other organs

Question 6

Peripheral nerves can be divided into

Answer 6

AUTONOMIC- Involuntary control
SOMATIC- Voluntary control

Question 7

Neurons

Answer 7

Responsible for transmission of nerve impulses from one neuron to another via synapse

Question 8

Neurological cells

Answer 8

Connective tissue supports the neuron

Question 9

Dendrites

Answer 9

Extensions that branch from one end of cell body. They receive information from other neurons and send impulses towards cell body

Question 10

Axon

Answer 10

a CABLE LIKE PROJECTION LOCATED ON OPPOSITE END OF THE CELL BODY FROM THE DENDRITE. Axon carries impulses away from cell body and toward next neuron train

Question 11

Interneurons (relay neurons)

Answer 11

These connect neurons to the other neurons, lie between a sensory and motor neuron

Question 12

A nerve

Answer 12

A bundle of neurons

Question 13

Neurotransmitters

Answer 13

travel between neurons at the synaptic cleft, include-
-Acetycholine
-Adrenaline
-Dopamine
-Serotonin

Question 14

Depolarization of a neuron

Answer 14

-Sodium chanel opens on neuron cell membrane
-Sodium ions flow into cell by passive diffusion
-increase in sodium leads to a positive electrical charge

Question 14

Repolarization of a neuron

Answer 14

-Sodium channels close
-k+ channels open
-K+ diffuses out of the cell
-Resting state resotred

Question 15

Grey matter

Answer 15

Consists of unmyelinated neurons, neuron cell bodies, and gilal cells

Question 16

White Matter

Answer 16

Made up of myelinated neurons ad gilal cells

Question 17

Meninges

Answer 17

Protective membrane layers around the brain and spinal cord:
1. Dura Mater
2. Arachnoid
3. Pia Mater

Question 18

Ventricular System

Answer 18

A series of interconnecting canals and cavaties/ventricles found inside the brain and spinal cord

Question 19

Choroid Plexus

Answer 19

The netwrok of capillaries known as the choroid plexus produces CSF

Question 20

Cerebrospinal fluid

Answer 20

Surrounds brain and spinal cord, protects and supplies nutrients

Question 21

Blood brain barrier

Answer 21

Modification of neurological tissue that connects and supports all the neurons

Question 22

Cerebrum

Answer 22

Consciousness and Intelligence, located in forebrain

Question 23

Thalamus

Answer 23

Processes information from the sense organs and relays the information to the cerebral cortex

Question 24

Epithalamus

Answer 24

Contains the pineal gland-secretes melatonin

Question 25

Cerebellum

Answer 25

Coordinating movement/ located in hindbrain

Question 26

Reflex arc

Answer 26

Reflexes happen unconsciously whenever something sharp or hot is touched

Question 27

Autonomic nervous system

Answer 27

Sympathetic- ‘Fight or Flight’
Parasympathetic- ‘rest and digest

Question 28

Cauda Equina

Answer 28

The spinal cord terminates in a series of fine nerves known as cauda equina