Respiratory
The trachea branches into what?
The bronchi.
Brings blood away from the heart and has a thick muscular wall.
Arteries.
What 2 parts is the central nervous system made up of?
Brain and spinal cord.
The shape of red blood cells.
Biconcave.
Name the 3 functions of the skeletal system.
Movement, protection and structure.
What does the bronchi branch into?
Bronchioles.
Why does the left side of the heart have a thicker muscular wall?
To pump oxygenated blood away from the heart.
What is the cerebrum responsible for?
Thinking and memories.
What engulfs pathogens.
Phagocytes.
How many bones does an adult human skeleton have?
206
We breathe out what?
Carbon Dioxide (CO2).
How many chambers of the heart are there and what are they.
4. Left ventricle, left atrium, right atrium and right ventricle.
Name the 3 neurones.
Sensory, Inter and Motor.
Produces antibodies that recognise specific pathogens.
Lymphocytes.
What is the function of Spongy bone.
Porous and allows blood and nerves to enter the bone tissue.
The location of gas exchange.
Alveoli.
What is the role of valves?
To prevent back flow of blood.
What is a stimulus?
A change in an organisms environment that causes an organism to react.
What type of tissue is blood?
Connective Tissue.
Where are the bodies red blood cells and platelets produced.
Stem cells in the soft bone marrow.
Sweeps dust and dirty mucus out of the air ways.
Cilia.
Into which chamber does deoxygenated blood first flow to?
Right atrium.
What is a reflex action? and describe its nervous system pathway.
An automatic response that bypasses the brain and goes straight to the spinal cord.
The molecule in blood designed to hold and carry oxygen.
Haemoglobin.
Function of smooth muscle.
Automatically to move substances through hollow organs.