New Blood And Guts Notes (Ms Ford) Flashcards
What is the function of the brain
Controls all body activity
What is the function of the heart
Pumps blood around the body
What is the function of the lungs
Take in oxygen. Remove carbon dioxide
What is the function of the kidneys
Filters the blood
Re absorbs useful substances from the blood
What is the function of the small intestine
Absorbs digestive food
What is the order of the body systems in humans
Circulatory ➡️ digestive ➡️ endocrine ➡️ muscular ➡️ nervous ➡️ skeletal
What is the function of the skeletal system
Protection, movement, support
What is the function of the muscular system
Movement
What is the function of the respiratory system
Gas exchange (oxygen in, carbon dioxide out)
What is the function of the circulatory system
Pump blood to deliver oxygen & glucose & to pick up carbon dioxide
What is the function of the digestive system
Absorbs digested food
What is the function of the nervous system
To send messages from sense organs to the brain
What is the function of the endocrine system
To release hormones which regulate body processes
What happens when we breathe in (inhale)
Intercostal muscles contract Rib cage raises Diaphragm lowers Lungs inflate Volume increase, pressure decreases Air is drawn into lungs
What happens when we breathe out (exhale)
Intercostal muscles relax Rib cage lowers Diaphragm raises Lungs deflate Volume decreases, pressure increases Air is forced out of the lungs
What is the heart made up of
It is made up of cardiac tissue
It has 4 chambers
What are the 4 chambers in the heart
Right atrium
Right ventricle
Left atrium
Left ventricle
Where does the right ventricle send blood
Pumps blood to the lungs
Where does the left ventricle send blood
Pumps blood to the whole body
What is the pathway in the circulatory system
Path way of blood
- Blood from the body
- Vena cava vein
- Right atrium
- Right ventricle
- Pulmonary vein
- Lungs
- Pulmonary vein
- Left atrium
- Left ventricle
- Aorta artery
- Blood to the body
- Arteries
- Capillaries
- Veins
What are the three types of blood vessels
Arteries, capillaries, veins
Arteries divide up into capillaries, then capillaries join up to make veins
Explain arteries
Arteries:
- thick muscular walls
- a narrow channel
- carry blood under pressure away from the heart
- a pulse indicate that blood is flowing through an artery
- arteries carry oxygen and nutrients
Explain Capillaries
- thin walled to allow exchange of gas, food and wastes
- capillaries form networks through organs and tissues and have a large surface area
- oxygen leaves capillaries and enters tissue/cells
- carbon dioxide leaves tissues/cells and enters capillaries
Explain veins
- veins thin muscular walls and a wide channel and carry blood under low pressure to the heart
- veins contain valves to prevent blood flowing backwards
- veins carry carbon dioxide and wastes
What are the levels of organisation
Cells ➡️ tissues ➡️ organs ➡️ systems ➡️ organism
