3 Systems Flashcards Preview

Year 7-8 Advance Science > 3 Systems > Flashcards

Flashcards in 3 Systems Deck (48):
1

Platelets

Involve with clotting blood

2

White blood cells

Leukocytes
An immune system that fights infections

3

Red blood cells

Erythrocytes
Carries oxygen (hemoglobin) and has no nucleus

4

Artery

Muscular and high pressure
Carries oxygenated blood away from the heart and to the body

5

Veins

Low pressure
Carries deoxygenated blood to the heart.

6

Valves

Stop backflow

7

Lungs

Remove carbon dioxide from blood and adds oxygen

8

Esophagus

Part of the digestive system.
A tube connecting the mouth and pharynx with the stomach

9

Small intestines

Part of the digestive system.
In between the stomach and large intestine, where the digestion of food and absorption of nutrients such as glucose and water

10

Oral cavity

Where food enters and get broken down.

11

Stomach

Stores food and mixes it with gastric acid

12

Large intestine

Absorbs water, vitamins and minerals from undigested food. Has an appendix at the beginning of the large intestine

13

What do gastric juice contain

Mucus, Hydrochloric acid and digestive enzymes

14

Mucus

Protect stomach cells from acid and digestive enzymes

15

Hydrochloride acid

Kills bacteria, protecting the stomach from infections

16

Digestive enzymes

Found in gastric juice is pepsin

17

Pepsin

Breaks down protein in food into amino acids

18

Inspiration

Air rushing into the lungs

19

Expiration

Air forced out of the lungs

20

To inhale what do we do

We contract out diaphragm pulling it down and making it flat
We contract our intercostal muscles pulling our ribs up.

21

To exhale what do we do

We relax our diaphragm so it moves upwards and curves
We relax our intercostal muscles pulling our ribs down

22

Position when inhaling

Mouth
Nasal cavity
Pharynx
Larynx
Trachea
Bronchi
Bronchioles
Alveoli

23

Position when exhaling

Alveoli
Bronchioles
Bronchi
Trachea
Larynx
Pharynx
Nasal cavity
Mouth

24

Gas exchange

Oxygen that we breathe in is moved into the bloodstream for cells to take up and carbon dioxide is removed from the bloodstream into the lungs so it can be breathed out

25

Alveoli

Moist and very thin
Tiny air sacks

26

Villi

Increases the surface area of the small intestine making it easier to absorb nutrients

27

First section of the small intestine

Duodenum

28

Peristalsis

Pushing food along the small intestine by the action of muscles

29

Proteases

Digests protein forming amino acids in the pancreas

30

Amylase

Digests carbohydrates such as starch forming sugar in the pancreas

31

Lipases

Digests fat, oil, fatty acids and glycerol in the pancreas

32

Liver

Produces a liquid called bile.
Removes toxins from blood and stored glucose

33

Gallbladder

Stores bile after it has been produced

34

Bile duct

Carries bile from the gallbladder to the small intestine

35

Four types of teeth

Incisors, premolars, molars and canines

36

Saliva

Acts to lubricate food so it is easier to go down the throats
Contains amylase

37

Incisors

To bite pieces of food so they are small enough to chew. They have a sharp edge

38

Premolars and molars

Used grind the food into smaller pieces

39

Canines

Used to hold food

40

Rectum

At the end of the large intestine and hold waste

41

Epiglottis

Blocks your windpipe while swallowing

42

Bile

Helps the body digest fat

43

Pulmonary arteries

Carries deoxygenated blood to the lungs

44

Pulmonary veins

Carries oxygenated blood to the heart from the lungs

45

Aorta

Carries oxygenated blood to the body

46

Mechanical digestion

Breaking down foods physically

47

Chemical digestion

Breaking down food with chemicals

48

Chyme

A mixture of food, acids, mucus and enzymes