Biology Topic 5 Homeostasis and Response

What regulates body temperature?

thermoregulation

What process regulates internal conditions?

Homeostasis

Where is Homeostasis maintained?

Coordination centre

What does the human nervous system allow?

Interact

How is information passed along nerves?

Electrical impulses

What is the central nervous system?

Brain and spinal cord

What does the CNNS do?

Coordinate responses

What triggers a response?

Stimulus

What nerve carries to CNS?

Sensory

What detects stimulus?

Receptor

What nerve make up CNS?

Relay Neruone

What connect two neurones?

Synapse

What produces a response?

Effector

How do nerve signals cross synapses?

Chemicals

What are reflex arcs?

Automatic and rapid

What practical measures response time?

Ruler drop

What controls complex behaviour?

Brain

What does the Cerebral Cortex do?

conscious mind

What controls unconscious breathing?

Medulla

Where is the Medulla?

Where is the cerebellum?

What does Cerberus do?

Muscle coordination

What is the eyes tough supporting wall?

Scelera

What in the eye refracts light?

Cornea

What contains muscle that control pupil size?

Iris

What focuses light in the eye?

Lens

What contains eyes receptor cells?

Retina

what do cillary muscles attach to?

lens

What do the suspensory ligaments do?

hold the lens in place

What carries away an impulse from the eye?

Optic nerve

What contracts when focusing on near objects?

Ciliary muscles

What loosens when focusing close up?

Suspensory ligaments

What happens to the lens when focusing up close?

Thicker and refracts more

When focusing far away what happens to Ciliary muscles?

Relax

What do the Suspensory ligaments when focusing far away?

Tighten

What is short sightedness?

Myopia

What is long sightedness?

Hyperopia

What is the highest risk eye treatment?

Lens replacements

What happens to blood vessels in high temperatures?

Vasodilation

Why does respiration occur when cold?

Release energy

What is quicker the nervous system or endocrine system?

Nervous system

What is the master gland?

pituitary gland

Where is the thyroid gland located?

neck

Where is the adrenal gland?

above the kidneys

What is produced if blood sugar level gets too high?

Insulin

What Is excess glucose stored as?

glycogen

Where is insulin produced?

pancreas

Which diabetes produces little or no insulin?

Type 2

What are type 2 diabetics?

Resistant to insulin

What is secreted when Glucose is low?

Glucagon

What require the perfect amount of water?

Cells

What do excess proteins form?

Amino acids

What do amino acids form in liver?

Ammonia

What is Ammonia converted to in the body?

Urea

What organ filters blood?

kidney

What reabsorbs water in kidney?

Tubules

Cheapest solution for kidney failure in the long run?

Transplant

How often is dialysis performed?

3 times a week

How often does an egg release?

28 days

What day is egg release?

14

What hormone causes egg to mature in ovary?

Follicle stimulating hormone

What does FSH stimulate?

Oestrogen

What grows uterus lining?

Oestrogen

What does Oestrogen stimulate?

LH

What does Oestrogen inhibit?

FSH

What stimulates egg reales?

Luteinising Hormone

What maintains the uterus lining in the second half?

Progesterone

Day range where uterus beaks down?

1-4

Day range where uterus lining builds up?

4-14

Day range where lining is maintained?

14-28

What hormone can be taken to prevent egg release?

Oestrogen

What hormone creates a thick mucus protecting against sperm?

Progesterone

Which pill has both hormones?

Oral

How effective is the pill?

99%

What does the pill have?

Side effects

How long does a contraceptive patch las?

1 week

How long does an injection last?

2-3 weeks

Best contraception?

Condom

What can be given to stimulate ovulation?

FSH and LH

risk of IVF?

Multiple births

What does thyroxine do?

regulates metabolism

What stimulates thyroxine?

TSH

What hormone initiate seed generation?

Gibberellins

What controls ripening or plants?

Ethene

What hormone fertalises?

Auxins