Biology2 7C Muscles and bones Flashcards
Describe the four main functions of the skeleton.
- to support the body
- to protect some of the vital organs of the body
- to help the body move
- to make blood cells
Give an example of how the skeleton supports the body.
Without a backbone we would not be able to stay upright.
Give an example of how the skelton protects the body.
- the skull protects the brain
- the ribcage protects the heart and lungs
- the backbone protects the spinal cord
Name the blood cells that are made in the bone marrow.
Red and white blood cells.
State the function of Red Blood Cells.
Carry oxygen around the body in the blood
State the function fo white blood cells.
Involved in destroying harmful microorganisms in your body.
Where are Red Blood Cells and White Blood Cells made?
These cells are made in the bone marrow. This is soft tissue inside our larger bones which is protected by the hard part of the bone which surrounds it.
What happens to your breathing rate as you exersise?
Increases
What happens to your pulse rate as you exersise?
Increases
Name muscles A and B.
A - Tricep
B - Bicep
What is meant by the term antagonistc muscles?
A pair of muscles that act on a joint. As one contracts, the other one relaxes.
State the function of blood plasma.
Plasma is a straw-coloured liquid. It transports dissolved substances around the body, including:
- hormones
- nutrients, such as water, glucose, amino acids, minerals and vitamins
- waste substances, such as carbon dioxide and urea
Describe what happens when we inhale. (Breath in)
When we breathe in…
Describe in detail what happens when we exhale. (Breath out)
When we exhale…
State the function of muscle cells.
Muscles contract, bringing about movement.
Define a drug.
Drugs are chemicals that can alter the way the body works. There are different types of drugs, and these have different effects on the body.
The the types of drugs and give an example of each.
Types of drugs…
