Checkpoints- Nervous System/Stress (qq's which need revising)

Question 1

Explain how info is transmited between two neurons

Answer 1

1. neurotransmitter chemicals are released into synaptic cleft and detected by receptor sites
2. the postsynaptic neuron will either by activated or reduced/inhibited through the specific action of the neurontransmitter

Question 2

What are the two cortex areas of the Temporal lobe?

Answer 2

Primary auditory cortex, Association cortex

Question 3

What is the function of Broca’s area? (Temporal Lobe)

Answer 3

1. to produce grammatcial and fluent speech

2. assists with pronounciation by controlling mouth, lips, tongue

Question 4

What is the funtion of Wernickes area in the Temporal Lobe?

Answer 4

involved with understanding sounds and giving words and sentances meaning

Question 5

Why would you be likely to feel more pain from cut on tongue than on elbow (2)

Answer 5

somatosensory cortex is specifcaly allocated to a particular body part

tongue has larger amount of cortex devoted to it than elbow which makes tongue more sensitve to pain.

Question 6

what is the function of the somatosensory cortex

Answer 6

to process sensations such as touch pressure via hyperthalamus.

Question 7

Describe 2 major function of the Somatic N, giving examles of each

Answer 7

controls all vountary movements of skeletal muscles (eg. walking)

recieves info from sensory receptors (eg. detecting pressure and pain)

Question 8

Outline the difference between SNS and PNS in coordinating muscles, organs and glands of the body

Answer 8

1. PNS calms muscles glands and organs and maintains homeostasis
2. SNS increases responsiveness of muscles, glands and organs to prepare body for action/fight or flight.

Question 9

what is a value and limitation of a case study?

Answer 9

Value- provides detailed examination of a case leading to new hypotheses or theories

Limitation- time consuming anaylsing data and reporting procedures

Question 10

If Katrina puts the glass of hot milk back down on the table because it’s too hot, what detects the pain at first?

Answer 10

sensory receptors in the fingers

Question 11

Which part of the brain receieves sensory signals?

Answer 11

Somatosensory Cortex (Parietal lobe)

Question 12

Describe spinal reflex.

Why it is unconcious responese?

Answer 12

1. spinal reflex is when a signal from sensory receptors are transmitted to neurons in spinal cord. Neurons in spinal cord directly transmit signals to an effector muscle, causing fast reponse.
2. it is unconsious bc it occurs automatically before brain is alerted

Question 13

Give 2 example of an unconcious spinal reflex response.

Answer 13

a person leg flexing when tapped on knee cap

2. you instantly withdraw hand from hot stove

Question 14

what is dopamine

Answer 14

excitatory neurotransmiter

Question 15

what is GABA and what does it regulate

Answer 15

inhibitory, regulates initiation and control of motor functions

Question 16

what happens to dopamine in P.D Patients?

Answer 16

dopamine decreases in the brain as dopamine neurons die

Question 17

What does GABA do in patients of PD?

Answer 17

reduces nerve and muscle cell stimulation, decreases muscle movement.

GABA levels decrease due to Dopamine dying

Question 18

Give examples of motor symptoms resulted in lack of Dopamine

Answer 18

trmor, shaking, muscle ridgity, slowness of mvt

Question 19

What is a long term problem from the lack of Dopamine and GABA? (besides form parkinesons)?

Answer 19

Dementia