Parts of the brain

Question 1

What are the 4 Parts of the brain

Answer 1

Frontal Lobe
Temporal Lobe
Pariteal Lobe
Occipital Lobe

Question 2

Function of : Frontal Lobe

Answer 2

Conscious thought

Question 3

Function of : Occipital Lobe

Answer 3

Vision

Question 4

Function of : Temporal Lobe

Answer 4

Hearing and Spelling

Question 5

Function of : Parietal Lobe

Answer 5

Temp/Touch/Pain

Question 6

Function of : Medulla Oblongata

Answer 6

maintains homeostasis, pathway between spinal cord and brain

Question 7

Function of : Cerebrum

Answer 7

largest part of the brain, controls conscious thought, initiates reactive movements, memory, perceives sensory info.

Question 8

Function of : Cerebellum

Answer 8

lower portion of the brain, second largest. controls muscle coordination, muscle tone, balance, posture, smooth graceful motions.

Question 9

Function of : Corpus collasam

Answer 9

holds the two hemispheres of the cerebrum together, conducts impulses from one side of the brain to the other.

Question 10

Function of : Pituitary Gland

Answer 10

produces and releases hormones for a function.

Question 11

Function of : Hypothalamus

Answer 11

above the pituitary gland, it controls the pituitary glad telling it when to produce a hormone. it also helps maintain homeostasis (hunger, thirst, temp etc).

Question 12

Function of : Thalamus

Answer 12

above the hypothalamus, its a relay station for info going to the cerebrum, channels info to appropriate places and prevents sensory overload.

Question 13

CNS

Answer 13

brain and spinal cord

Question 14

PNS

Answer 14

Sonomic and Autonomic,
Autonomic has two divisions
1. sympathetic
2. parasympathetic

Question 15

What is Sonomic?

Answer 15

Voluntary control - nerves that control the skeletal muscles, joints, skin. receive and act on external stimuli.

Question 16

What is Autonomic?

Answer 16

Involuntary control - Nerves that control smooth muscles of the internal organ and glands.

Question 17

What is Sympathetic?

Answer 17

The body is ready for physical activity (maintain homeostatic levels so that the body doesn’t shut down).

Question 18

What is Parasympathetic?

Answer 18

Bringing the bod back to restful state (recovery).

Question 19

Describe Fight or Flight response

Question 20

Body responses to Adrenelin (6 steps)

Answer 20

1.increase in heart rate
2.increase in breathing rate
3.increase in muscle recruitment
4.pupils dilate
5.blood vessels dilate
6.lost breath

Question 21

response and result of adrenaline to the body?

Answer 21

Hypo detects adrenaline and send message to pituitary gland to produce and release ACTH hormone. ACTH gets released to the adrenal cortex.

Response: cortisol travels to the liver to breakdown glycogen into glucose (Inc sugar)

aldosterone travels to the kidney to make sure water level in blood stay high (inc BP)

Question 22

Name all 8 Hormones

Answer 22

1. FSH - follicle stimulating hormone (sperm production and egg starts to mature)
   2.LH - Liutinizing hormone (testosterone and realeasing of egg
   3.ACTH - Adrenal Gland
   4.TSH - Thyroid stimulating hormone (thyroid/metabolism)
   5.PRL - Prolactin (breast milk)
   6.GH - Growth hormone
   7.Oxytocin - uterus (contractions / labor)
   8.ADH - antidureic hormone (kidney dehydration, blood volume)

Question 23

PNS Types of neurons

Answer 23

1. Motor neuron (impulse away from CNS)
   2.Sensory Neuron (impulse towards CNS)

Question 24

Nerve Transmission of an impulse name the 4 steps and what each one does.

Answer 24

1. Resting Potential (no impulse)
   2.Depolarization (impulse travels through neuron)
   3.Repolarization
   4.Recovery (re-distribution of ions) Na to blood/K to axoplasm

Question 25

Pain Vs Touch

Answer 25

Pain is high frequency Touch is low frequency

Question 26

Why do we have reflexes?

Answer 26

Designed for safety so that the body can move without using the brain.

Question 27

Reflex Arc describe it

Answer 27

a neural pathway in which a reflex travels by. moves from sensory neutron to motor neurone.

Question 28

How does MO serve both pathways Sympathetic and Parasympathetic?

Answer 28

when exercise happens there is an excess amount of CO2 that is produced so the MO detects it and send a homeostatic response to the body. first there is an increase in blood flow by increasing heart rate (keeping things level) then there is an increase in breathing to allow for more CO2 to be exhaled. then there is an increase in the blood pressure to restrict flow to certain parts of the body so more pressured blood can pick up the CO2.