Brain

Question 1

What are the 2 division systems of the Brain

Answer 1

Central Nervous System

Peripheral Nervous System

Question 2

What are the names of the lobes in the brain

Answer 2

Frontal
Temporal
Parietal
Occipital

Question 3

What is the cerebrum composed of?

Answer 3

Nerve Cell Bodies (Grey Matter) forming the cortex.

Nerve Cell Fiber axons (White matter) forming the deeper layers.

Question 4

Describe the surface of the cerebral cortex

Answer 4

Unfoldings and Furrows varying in depth.

Exposed areas of the folds (Gyri) Seperated by (fissures). This increases the surface area.

Question 5

What are commisural tracts

Answer 5

Corpus Colosseum

Question 6

What are projection tracts

Answer 6

Connect the cerebral cortex with grey matter in the lower part of the brain and the spinal chord.

Question 7

What are the 3 areas in the brain stem

Answer 7

Mid-brain
Pons
Medulla Oblongata

Question 8

What are the 3 types of functional area in the brain

Answer 8

Motor (Voluntary) - direct skeletal and muscle movements.

Sensory- Receive and decode sensory impulses.

Association- Integration and processing of complex mental functions like reasoning, judgement etc.

Question 9

What are the 4 sub divisions in the Sensory Areas

Answer 9

Somatosensory- Pain, pressure, movement etc
Auditory area- Receive impulses from inner ear
Taste Area- Impluses from taste receptors
Visual area- Optic nerves pass from the eye to the occipital

Question 10

What are the 4 Assosiation areas of the brain

Answer 10

Premotot area- Enable co-ordination and learned movements
Pre-frontal area- Intellectual functions
Wrenicks area- Language production
Parieto-occipital Area- spacial awareness and memory

Question 11

How can you describe the Parieto-occipital area

Answer 11

You can reciognise an object by touch alone because of past experience

Question 12

Decsirbe the structure of the cerebrum

Answer 12

Largest part of the brain that splits into 2 hemispheres and 4 Lobes

Question 13

Contains the thalmus, Epithalmus and Hypothalmus

Answer 13

Diencephalon

Question 14

Function of the Thalmus

Answer 14

Acts as a relay center from the spinal chord, sending appropriate information to the correct part of the brain.

Question 15

Function of the Epithalmus

Answer 15

Contains pineal gland that secretes melatonin for the sleep wake cycle

Question 16

Function of the Hypothalmus

Answer 16

Controls Homeostasis, endocrine homeostasis, temperature etc

Question 17

Sclera

Answer 17

outer most layer of the eye

maintains eye shape and connects the muscles

Question 18

Ciliary Body

Answer 18

Is a continuation of the chroid

Muscle fibers determine the size of the lense

Question 19

Iris

Answer 19

Is the visible coloured ring in the eye
Seperates the eye into anterior and posterior cavities
parasympathetic increases pupil
sympathetic decreases pupil

Question 20

what are the 2 nerve supplies from the eye to the brain

Answer 20

cranial nerve 1 and cranial nerve 2

Question 21

Cones

Answer 21

colour receptors

Question 22

Rods

Answer 22

Black and White receptors

Question 23

cornea

Answer 23

bends light receptors to the retina

Refraction

Question 24

chroid

Answer 24

Absorbs sensory receptors

Question 25

2 types of receptors in optic nerve transmission

Answer 25

Ganglion and Bipolar receiving sensory from rods and cones

Question 26

Hypothamlus function

Answer 26

Autonomic control- sleep, hunger, homeostasis

Question 27

pituitary

Answer 27

connected to the hypothalmus

controls endocrine glands