Nerve impulse

Question 1

neurons communicate with each other through

Answer 1

dendrytes

Question 2

resting potential is

Answer 2

-70mv

Question 3

threshold is

Answer 3

-55mv

Question 4

sensory neurons

Answer 4

neurons are attached t stimulus receptors and carry messages to the processing centers of the nervous system

Question 5

inter neurons

Answer 5

these neurons make up the processing centers of the nervous system

Question 6

motor neurons

Answer 6

these neurons carry a response message back to either a muscle or a gland/

Question 7

peripheral nervous system

Answer 7

somatic and autonomic

Question 8

somatic

Answer 8

sensory neurons
motor neurons

Question 9

autonomic

Answer 9

1.) sympathetic system
2.) parasympathetic system

Question 10

frontal lobe

Answer 10

controls movement of voluntary muscles which includes walking and speech. It is also linked to intellectual activities and learning.

Question 11

temporal lobe

Answer 11

associated with hearing, although it also has links with vision, memory and sensory information interpretation.

Question 12

the cerebellum is located

Answer 12

immediately below the cerebrum

Question 13

the cerebellum controls

Answer 13

the subconscious skeletal muscle contractions required for movement balance posture and muscle contraction

Question 14

thalamus

Answer 14

The thalamus is located below the cerebrum and is responsible for coordinating and interpreting sensory information associated with touch, pain, heat and cold.

Question 15

hypothalamus

Answer 15

The hypothalamus is located below the thalamus and is associated with the control of hunger, body temperature, aggression and other aspects related to metabolism.

Question 16

medulla oblangata

Answer 16

The medulla oblongata is located below the pons and above the spinal cord. It serves as a connection between the central and peripheral nervous systems. It is associated with the autonomic nervous system and as such controls many internal organ responses such as breathing rate, heart rate, peristalsis and glandular secretions.

Question 17

means “bridge”. It is appropriately named as it serves as a relay station for information passing between the cerebrum, the cerebellum and the medulla.

Answer 17

pons

Question 18

is a complex set of structures that lies on both sides and beneath the thalamus. This system includes the hypothalamus, hippocampus and the amyglada. This system is very much related to memory and your emotions.

Answer 18

limbic system

Question 19

the amyglada

Answer 19

is located on the left side of the thalamus and controls emotions such as aggression, fear and jealousy.

Question 20

hippocampus

Answer 20

is also located on the left side of the thalamus and is required for the formation of long term memories.

Question 21

the eye Is composed of three separate laters

Answer 21

sclera
colorid
retina

Question 22

choroid

Answer 22

middle layer of the tissue in the eye that contains blood vessels and dark pigments that absorb light to stop reflection

toward the front of the choroid layer is the iris

Question 23

retina

Answer 23

innermost layer of tissue at the back of the eye containing photoreceptors

Question 24

aqueous humor

Answer 24

watery liquid that protects the lens of the eye and supplies the cornea with nutrients

Question 25

vitreous humour

Answer 25

maintains the shape of the eyeball and permits light transmission to the retina

Question 26

fovea

Answer 26

area at centre of retina where cones are most dense and vision is sharpest; no rods present here

Question 27

blind spot

Answer 27

where the optic nerve attaches to the retina

Question 28

the reflex arc

Answer 28

an involuntary response to stimuli controlled by the somatic division of the nervous system the simplest of neural responses that generally involves only 2 or 3 neurons

Question 29

damage of the occipital lobe

Answer 29

causes identifying colours

Question 30

a ventral tract brings

Answer 30

motor information

Question 31

a dorsal nerve carries

Answer 31

sensory information

Question 32

the cerebellum is also known as the forebrain

Answer 32

no

Question 33

the cerebrum is part of the forebrain

Answer 33

yes

Question 34

what does the medulla oblongata control

Answer 34

the heart rate, breathing and blood pressure

Question 35

monsynaptic

Answer 35

refers to the presence of a sin gle synapse no interneuron is present

Question 36

polysynaptic

Answer 36

multiple interneurons

Question 37

inhibitory neurotransmitters

Answer 37

lowers resting potential

Question 38

the part of the brain that allows ommunicatio between the two hemispheres is called

Answer 38

corpus callosum

Question 39

the division of the nervous system which consists of nerves found lying outside of the CNS

Answer 39

peripheral

Question 40

the section of the nervous system that allows you to control the movement of your arm or leg

Answer 40

somatic

Question 41

in the axon of a motor fiber the impulse travels

Answer 41

towards the dendrytes

Question 42

a sudden influx of sodium ions at the stimulated point of a neuron results in a phenonmenon known as

Answer 42

depolarization

Question 43

which neurons are contained in the central nervous system

Answer 43

interneurons

Question 44

the knee jerk relay pathway has a motor neuron connected directly to a sensory neurons this is an example of

Answer 44

monosynaptic pathway

Question 45

denrites of a neuron may often

Answer 45

recieve impulses from other neurons

Question 46

clinical depression has been linked to a lack of serotonin (a neurotransmitter) in the body. For a patient suffereing from depression, would you recommend a drug that interferes with the re-absorption of serotonin into cells, or a drug that blocks serotinin receptors?

Answer 46

Yes I would recommend this because a drug that interferes with the re absorption of serotonin into cells allows more seratonin into the synaptic cleft.

Question 47

what is an example of a polysynaptic reflex

Answer 47

One example is the automatic withdrawal of the leg when the foot steps on a sharp object

Question 48

These neurons make up the processing centers of the nervous system.

Answer 48

inter neurons

Question 49

These neurons carry a response message back to either a muscle or a gland.

Answer 49

motor neurons

Question 50

what is action potential

Answer 50

35mv