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Flashcards in Heart and Digestion Deck (36):
1

What is chemical digestion

Involves the use of enzymes to break down the food

2

What do amylases break down

Carbohydrates

3

What do proteases break down

Protein

4

What do lipases break down

Lipids

5

what is the substance that enzymes breakdown

Substrate

6

How do enzymes die

When they become over heated

7

In the digestion diagram from ur mouth to ur anus what's in the middle

Mouth
Salivary glands
Epiglottis
Oesophagus
Liver
Gall bladder
Stomach
Pancreas
Small intestine
Large intestine
Appendix
Rectum
Anus

8

describe function of the villi

Once food is broken down by enzymes into molecules in ur small intestine the molecules are absorbed through finger shaped villi

9

Describe shape of villi

Villi are shaped like fingers to maximise surface area increasing the efficiency of nutrient absorption into the capillaries these nutrients are transported to cells that need them

10

From top to bottom label the villi

Epithelium cells
Capillaries
Lacteal
Veins
Lymph vessel

11

From top to bottom label the heart

Aorta
Superior vena cava
Left atrium
Right atrium
Right ventricle
Left ventricle
Inferior vena cava

12

How much blood in a human

5 litres or bucket full

13

How many times do RBC travel around the body

300 000 times 120 days

14

Where are RBC manufactured

1.7 million RBC are manufactured in the bone marrow each second

15

Plasma

Plasma is found in 55% of blood and is a straw coloured fluid. It contains serum and fibrinogen

16

RBC

Lacks a nucleus and are biconcave it also carries oxygen and a pigment haemolglobin

17

WBC

Contains a nucleus making them larger they also fight illness and infection

18

Platelets

They clot blood vessels and prevent germs getting in

19

Structure and function arteries

They transport blood from your heart
Arteries have thick elastic walls and carry blood under high pressure away from your heart

20

Structure and function veins

Transport blood back to the heart
Thin walls and posses valves

21

Structure and function capillaries


Capillaries transport substances such as oxygen and nutrients to cells and remove wastes

22

Where are capillaries found

Between arteries and veins

23

Incisors

Act like scissors, used for biting and cutting,
Chiseled edge and broad thin crown

24

Canines

Fang like, tear and grasp food, sharp pointed

25

Molars and premolars

Have cusps used for grinding and crushing

26

What is peristalsis

Help push down food in the Oesophagus and small intestine

27

What coeliac disease

Intolerant to gluten

28

Where are the ventricles

Bottom

29

Where are the atriums

Top

30

Where does the blood pumped from the left side got to

Everywhere except lungs

31

Where does the blood pumped from the right side go to

The lungs

32

What is systolic pressure

When ur blood pressure is at its highest as the heart contracts

33

What is diastolic pressure

Blood pressure at its lowest where the heart is relaxed

34

What are valves

Help blood to only travel in one direction

35

What is a electrocardiograph

Shows electrical activity of a persons heart

36

What is mechanical digestion

Also know as physical digestion as u use ur teeth to bite tear crush and grind food