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