Body Systems Flashcards
What is digestion?
Digestion is the process of mechanically and enzymatically breaking down food into substances for absorption into the bloodstream.
The process of mechanically and enzymatically breaking down food into substances for absorption into the bloodstream.
Digestion
What is mechanical digestion?
Mechanical digestion involves physically breaking down food substances into smaller particles to more efficiently undergo chemical digestion.
Physically breaking down food substances into smaller particles to more efficiently.
Mechanical digestion
What is chemical digestion?
Chemical digestion uses certain enzymes to break down nutrients, such as carbohydrates, proteins, and fats, into smaller molecules.
Uses certain enzymes to break down nutrients, such as carbohydrates, proteins, and fats, into smaller molecules.
Chemical digestion
What is respiration?
Respiration is a series of chemical reactions occurring inside cells.
What are the main organs in the human respiratory system?
The lungs, the trachea and the diaphragm.
How does the respiratory system work?
Breathing in, air enters the airways and travels down into the alveoli in the lungs. This is where gas exchange takes place.
List the components of the circulatory system.
The primary components in the circulatory system are the heart, the blood vessels, arteries, veins and capillaries.
What is the function of the heart?
The heart’s function is to pump blood around the body.
What is the function of the arteries?
The arteries carry oxygen-rich blood from the heart to the body.
What is the function of the veins?
Veins are blood vessels located throughout your body that collect oxygen-poor blood and return it to your heart.
What is the functions of the capillaries?
They transport blood, nutrients and oxygen to cells in your organs and body systems.
What is the structure of the heart?
Four chambers: two upper chambers known as the left atrium and right atrium and two lower chambers called the left and right ventricles. It is also made up of four valves which connect the chambers.
What is excretion?
the way the body gets rid of wastes it has produced.
the way the body gets rid of wastes it has produced.
Excretion
Describe the excretory role of the lungs.
removal of carbon dioxide and some wate
Describe the excretory role of the kidneys.
removal of urea, salt and water
What are the functions of the skeleton?
support, protection, movement.
How does the skeleton protect?
Protection – the bones of the skeleton protect the internal organs and reduce the risk of injury on impact.
How does the skeleton aid in movement?
Movement –The bones act as levers and also form joints that allow muscles to pull on them and produce joint movements.
How does the skeleton aid in support?
Support – the skeleton keeps the body upright and provides a framework for muscle and tissue attachment.
What are ligaments?
A ligament connects bone to bone
What function do ligaments serve?
usually serves to hold structures together and keep them stable.
What are tendons?
A tendon is a fibrous connective tissue that attaches muscle to bone.
What function do tendons serve?
Attach muscles to structures and serves to move the bone or structure
What are muscles?
Muscles are pieces of soft tissue throughout the body.
What function do muscles serve?
Muscles also move and support the internal organs. It allows for easier movement and for the body to perform tasks physical more efficnetly.
Explain how breathing rate is linked to respiration rate
The respiratory rate is the rate at which breathing occurs. This is because while breathing is a mechanical process where the air volume changes in the chest cavity and respiration is a biochemical process where oxygen is introduced into the bloodstream and carbon dioxide is expelled from the body, when breathing these things happen at the same time meaning that they are same thing.
