Homeostasis

Question 1

What are the four internal conditions that need to be controlled

Answer 1

temperature
ion content
water content
blood glucose

Question 2

Pituitary gland

Answer 2

• produces FSH LH TSH
• controls growth in children
• stimulates the thyroid gland to make thyroxine to control the rate of metabolism
• in women it stimulates the ovaries to produce oestrogen
• in men it stimulates the secretion of testosterone

Question 3

Thryoid

Answer 3

controls the metabolic rate of the body

Question 4

pancreas

Answer 4

produces insulin and glucagon

controls the levels of blood glucose in the body

Question 5

Adrenal gland

Answer 5

produces adrenaline

prepares the body for stressful situations

Question 6

ovaries

Answer 6

produce progesterone and oestrogen

controls the development of female secondary secual characteristics and is involved in the menstrual cycle

Question 7

Testes

Answer 7

controls the development of the male secondary sex characteristics and is involved in the production of sperm

Question 8

What are the target areas of adrenaline

Answer 8

heart = increased rate of contractions

muscles = increased rate of blood flow to major muscles and limbs instead of digestive system

liver = stimulates breakdown of glycogen into glucose for respiration

pupils = let in more light

Question 9

What does the frontal lobe do

Answer 9

responsible for, personality, emotions, problem solving and reasoning

Question 11

what does the parietal lobe do

Answer 11

sensory stuff

Question 12

what does the temporal lobe do?

Answer 12

responsible for hearing, language and speech

Question 13

what does the occipital lobe do

Answer 13

vision

Question 14

Cerebellum

Answer 14

balance and coordination

Question 15

medualla oblongata

Answer 15

basic bodily functions

Question 16

what is myopia

Answer 16

light is focused in front of the retina

close objects are focused and far ones are blurry

eyes are too long

lens over converges light rays

concave lens is needed

Question 17

hyperopia

Answer 17

light is focused behind the retina

close objects are blurry, far ones are in focus

eyes are too short
loss of elasticity in the lens meaning it cant become thick enough to refract

convex lens is needed

Question 18

What does FSH do

Answer 18

causes the eggs in the ovary to mature

Question 19

what does LH do

Answer 19

stimulates the release of the egg at ovulation

Question 20

what does oestrogen and progesterone do

Answer 20

control the build up and the maintenance of the uterus lining

Question 21

what does the pill do

Answer 21

releases progesterone which stops the FSH and maturing of the eggs

hormone and non barrier

Question 22

what does the implant do

Answer 22

releases progesterone

hormone and non barrier and medical procedure

Question 23

condoms

Answer 23

prevent sperm reaching the gg
barrier method

Question 24

IUD

Answer 24

prevents implantation of egg
medical procedure

Question 25

spermicidal agent

Answer 25

kills / disables sperm chemical

Question 26

surgical methods of sterilisation

Answer 26

ties the fallopian tubes medical procedure

Question 27

abstinence

Answer 27

track when you are ovulating

Question 28

pros and cons of the pill

Answer 28

pro = simple and effective con = mood changes and breaks may be needed from it

Question 29

implants

Answer 29

don't have to remember anything and very efffective minor surgery you can't change it quickly

Question 30

condoms

Answer 30

prevents STD's can split

Question 31

spermicidal agents

Answer 31

pro = lubricant cons = not very effective

Question 32

ssurgical methods of sterilisation

Answer 32

pro = effective con = risk of permanent closure and a major surgical procedure

Question 33

abstinence

Answer 33

pro = don't need to take any chemicals or have a medical procedure con = not effective

Question 34

pros and cons of IVF

Answer 34

pro = babies con = 35% successful very expensive stress for the couple low success rates risks of multiple births

Question 35

what are some moral issues with IVF

Answer 35

unsused embryos are incinerates, used for research or frozen and some people think that they are alive embryos can't be stored forever the use of sperm after the death of a partner, if a woman dies a man can use his sperm to make a baby