All Test Science Flashcards
What does red blood cells contain
Red blood cells contain haemoglobin which contains lots of iron
What shapes do the red blood cells have and why
They have a flat concave shape which allows it to enter oxygen fast which they need to have a better gas exchange they need a bigger surface area
Why is having a flexible shape good
They can enter every part of our body
What does blood collect and why
Water oxygen and nutrients
To provide them to the cells
Why does Rae blood collect carbon dioxide and waste
To get rid of it
What are capillaries
They are the final distanition of the oxygen
How does capillaries look like
They have small holes between them and only cell walls that are thick
Vocabulary of our respiratory system
Lungs ribcage ( bones ribs and muscles - diaphragm and intericoastal
Inhale
Air gets in because it increases the size of my ribcage I create an under pressure
When inhale what happens to the diaphragm
Flattens and is contracted
Exhale
Put more pressure diaphragm rises
Aerobic respiration
Oxygen reacts with glucose to produce carbon dioxide and water and energy a lot which we need for living
Calcium
Strong teeth and bones
Nose - …
Nose throat trachea bronchi bronchioles alveoli
Diffusion
When there is any particles that are going from a high concentrated place to a low concentrated
What does the Alveoli and capillary do
Alveoli and then the capillary are taking the oxygen in and the carbon dioxide out
When you breathe in:
Your diaphragm goes down
Your intercostals muscles contract causing your ribs to expand your lungs get bigger
When you breathe out
Your diaphragm goes up your intercostal muscles relax and your ribs move inwards your lungs get smaller
Skeleton
Skull Mondible- in the mouth Neck Scapula - near the shoulders Ribs Humerus / upper arm Vertebrae bone connecting ribs Pelvis Radius - middle of arm Ulna - 1 of the bones in the arm Femur - upper leg Tibia - down leg Patella - knee
What bones does the skull protect t
The brain
Name the bones found i. Your neck
7
Describe the role of your ribs
Protecting our lungs
Common name for tibia
Shin
Name the bones that form the hip
Pelvic bone
Name the bones that form the knee
Patella
Name the bones that form the elbow
Radius
What is muscles function
Muscles move the bones and pulls on a bone when it contacts ( gets shorter and fatter)
What do you say when. A muscle is not contracted
Relaxed
Tendons function
Attach the muscles to the bones
Ligaments function
Hold the bones uma joint
What is a ball and socket joint
Joint where a ball shaped piece of bone fits into a socket made by other bones
What is the ball and socket joint movement
Everywhere
What is the hinge joint movement
Up and down
Hinge joint
Joint where two bons form a hinge
Muscles names
Muscle on the right is a biceps
In the middle it’s the upper arm bone
On the left muscle it’s the triceps
And under both it’s the lower arm bones
What is underneath the triceps
Underneath the triceps it’s the ligament
What is underneath the biceps
Underneath the biceps it’s the tendon
Antagonistic pair
To muscles that pull a bone in opposite directions
The biceps and the triceps are
Antagonist pair
To bend the elbow
Biceps …..
Triceps …
Biceps contracts
Triceps relaxe
To straighten the elbow the
The triceps contrast
Qnd biceps relax
Fractures
Broken bones
Dislocations
When’s bone comes out of a place in anoint which means that muscle cannot pull the bones in the correct directions
Pulled muscles
When a muscle or a tendon has been stretched too much
Sprains
When a ligament has been stretched too much
Your heart blood and blood vessels are all part of your
Circulatory system
The process which plant cells to release energy is called
Photosynthesis
A type of joint which allow movement in just two opposite directions
Fixed joint
When a muscles get shorter and fatter it
Contracts
Another name for the trachea is
Windpipe
Write out the word equation for aerobic respiration
Glucose reacts with oxygen to produce carbon dioxide and water which produces lots of energy which r need
Function of white blood cells
White blood cells are part of the body’s immune system they help the body fight infections and other diseases
What does the skeletal system do
1 allows movement
2 produces blood cells
3 protects and supports organs
Diet
Diet is what you eat and drink
Why do you need for your health
Energy growth and repair and for your health
What is a nutrient
A nutrient is any substance needed for energy or used as a raw material to make other substances
your diet should contain the following nutrients
Proteins Carbohydrates Fats Vitamins and minerals Water Fibre
Why do you need protein
For growth and repair
Why do you need carbohydrates
For energy
Why do you need fats
Used to store energy
Why do you need vitimans and minerals
For health grown and repair
Why do you need water
For dissolving and carrying substances around the body for temperature control through sweating
Why do you need fiber
Is not classed as a nutrient because it is not digested or absorbed by the body but you need it to keep your intestines healthy
Another word for fats
Lipid
A lack of fibre
Constipation your intestine become blocked
Examples of fibre
Whole meal bread . Brown or whole grain rice , cereals , lentils , nuts and fruits
Examples of protein
Meat fish Eggs Dairy products Beans
Examples of carbohydrates
Bread Beans Milk Popcorn Pasta
Examples of fats
Butter Oil Nuts Meat Fish
Examples of minerals
Cereals Bread Meat Fish Dairy Fruit specials dried
Why does our body need energy
Our body needs energy for growing moving and keeping warm
What is the unit energy is measured in
Joules (j)