Background

Question 1

_____ neurons bring information to the CNS
_____ neurons take information from the CNS

Answer 1

Afferent brings information to the CNS
Efferent takes information from the CNS

Question 2

What does the peripheral nervous system divide into?

Answer 2

The somatic (voulantary) and autonomic (invoulantary)

Question 3

What does the autonomic NS divide into?

Answer 3

Sympathetic and Parasympathetic

Question 4

Draw and label a motor neuron

Answer 4

http://www.vce.bioninja.com.au/_Media/neuron-3_med.jpeg

Question 5

What does the cell body of a neuron contain?

Answer 5

The nucleus, golgi, ribosomes, mitocohondria, ER.

Question 6

What are the neuron specific structures that are present in th cell body and dendrites and what are their role?

Answer 6

Nissl bodies - they are large granular bodies (rough endoplasmic rediculum) composed of RNA and polyribosomes. They allow high rates of protein synthesis

Question 7

What does the myelin sheith allow and why?

Answer 7

Higher levels of electrical insulation allowing the impulse to travel faster.

Question 8

Draw and label a synapse

Answer 8

http://www.zoology.ubc.ca/~gardner/05-16_Signal_L.jpg

Question 9

What is the term for a projection from the cell body, in the form of either an axon or a dendrite

Answer 9

neurite

Question 10

What is the term for when 2 bipolar neurites fuse together?

Answer 10

Pseudounipolar

Question 11

What is the autonomic nervous system in control of?

Answer 11

the viscera (internal organs in main cavities of the body) - smooth muscle, cardiac muscle and the secretory glands.

Question 12

What is the difference between grey and white matter in terms of it’s composition?

Answer 12

Grey is enriched in nerve cell bodies and White contains a lot of myelinated axons.

Question 13

What isthe resting potential of neurones?

Answer 13

around -70mV

Question 14

describe neurological cells (glia)?

Answer 14

non-neuronal cells that maintain homeostasis, form myelin and provide support and protection for neurones.

Question 15

Which hemispheres is the brain dominated by?

Answer 15

The cerebral (frontal, parietal, temporal and occupital)

Question 16

What is contained in the

a) Forebrain
b) Midbrain
c) Hindbrain

Answer 16

Forebrain = Cerebrum, thalamus, hypothalamus

Midbrain = Tectum + tementum

Hindbrain = Cerebellum, pons, medulla

Question 17

What cortex does the frontal lobe contain? What other functions does this lobe control (3/5)?

Answer 17

Primary motor cortex

Movement, speech, planning, reasoning, emotions

Question 18

What are the functions of the perietal lobe and what cortex does it contain?

Answer 18

Integrates sensory information among various modalities, including spatial awareness, perception and navigation (See proprioception).

It is the main sensory receptive area for the sense of touch

Language processing

primary somatosensory cortex

Question 19

Which cortex does the occupital lobe contain?

Answer 19

The primary visual cortex

Question 20

What are the functions of the temporal lobe?

Answer 20

retention of visual memories
processing sensory input
comprehending language
storing new memories
emotion
deriving meaning

Question 21

What are the 2 cerebral hemispheres seperted by?

Answer 21

the great longditudinal fissure, in which lies the corpus callosum.

Question 22

What does the brain stem consist of?

Answer 22

The medulla oblongata, pons and midbrain (tectum and tegmentum)

Question 23

The surface of the cerebral hemisphere consists of cortical grey matter, which is folded into ____ and ____.

Answer 23

Gyri and Sulci