Body systems Flashcards
What does the saliva do?
Mositen food to make easier to swallow
Components of circulatory system
- Arteries
- Veins
- Capillaries
Functions of the skelaton
- Give shape and provide support
- Protect interal organs
- Allow movement
Function of ligaments
Connect bones to bones
Function of tendons
Attach muscle to bone
Function of Muscles
Generate movement by contracting & relaxing
Excratory role of the lungs
Remove carbon dioxide and water
Excratory role of the kidneys
Removes urea, salt and water
What does the excratory system do
Removes bodys waste
Parts of excratory system
- Lungs
- Skin
- Kidney
- Liver
Function of cappillaries
Connect arteries to veins, allowing the exchange of oxygen, nutrients & waste products.
Function of veins
Carry oxygen-poor blood from the bodys tissue back to the heart.
Function of arteries
Carry oxygen-rich blood away from the heart to tissues around body
Function of heart
Pumps oxygen-poor blood to the lungs for oxygenation, then pumps it around the body.
Blood carries
- Food to all cells
- Oxygen to all cells
- Waste away from cells
- Heat to regulate body temperature
- Cells that fight disease
Main organ in the respiratory system
The lungs
Define breathing
Draws air into the lungs and forces waste out
Define respiration
Extracts oxygen and allows it to pass into bloodstream
Mechanical digestion
When food is broken down physically into smaller peices
Chemcial digestion
Complex foods are broken down into simpler chemicals
What does the pancreas do
Produces pancreatic juices which break down carbohydrates, protiens and fats
What does the liver do
Produces bile which is responsible for the mechanical digestion of fats.
What do the large intestines do
Allows water and other nutrients to be reabsorbed into the body
What is the first section of the small intestine
The duodenum
