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Biology paper 2 > Homeostasis > Flashcards

Homeostasis Flashcards

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1
Q

What are the four internal conditions that need to be controlled

A

temperature
ion content
water content
blood glucose

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2
Q

Pituitary gland

A
  • 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
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3
Q

Thryoid

A

controls the metabolic rate of the body

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4
Q

pancreas

A

produces insulin and glucagon

controls the levels of blood glucose in the body

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5
Q

Adrenal gland

A

produces adrenaline

prepares the body for stressful situations

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6
Q

ovaries

A

produce progesterone and oestrogen

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

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7
Q

Testes

A

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

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8
Q

What are the target areas of adrenaline

A

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

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9
Q

What does the frontal lobe do

A

responsible for, personality, emotions, problem solving and reasoning

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10
Q
A
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11
Q

what does the parietal lobe do

A

sensory stuff

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12
Q

what does the temporal lobe do?

A

responsible for hearing, language and speech

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13
Q

what does the occipital lobe do

A

vision

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14
Q

Cerebellum

A

balance and coordination

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15
Q

medualla oblongata

A

basic bodily functions

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16
Q

what is myopia

A

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

17
Q

hyperopia

A

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

18
Q

What does FSH do

A

causes the eggs in the ovary to mature

19
Q

what does LH do

A

stimulates the release of the egg at ovulation

20
Q

what does oestrogen and progesterone do

A

control the build up and the maintenance of the uterus lining

21
Q

what does the pill do

A

releases progesterone which stops the FSH and maturing of the eggs

hormone and non barrier

22
Q

what does the implant do

A

releases progesterone

hormone and non barrier and medical procedure

23
Q

condoms

A

prevent sperm reaching the gg
barrier method

24
Q

IUD

A

prevents implantation of egg
medical procedure

25
Q

spermicidal agent

A

kills / disables sperm

chemical

26
Q

surgical methods of sterilisation

A

ties the fallopian tubes

medical procedure

27
Q

abstinence

A

track when you are ovulating

28
Q

pros and cons of the pill

A

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

29
Q

implants

A

don’t have to remember anything and very efffective

minor surgery you can’t change it quickly

30
Q

condoms

A

prevents STD’s

can split

31
Q

spermicidal agents

A

pro = lubricant

cons = not very effective

32
Q

ssurgical methods of sterilisation

A

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

33
Q

abstinence

A

pro = don’t need to take any chemicals or have a medical procedure

con = not effective

34
Q

pros and cons of IVF

A

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

35
Q

what are some moral issues with IVF

A

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

Biology paper 2 (1 decks)

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