HSB Flashcards
Photosynthesis word equation
Carbon➕water➕light energy➕glu➕ox
➡️
Chlorophyll
What is bioaccumulation
This is the build up of chemicals in living organisms
Why do we need food
• Energy to do things
• Raw materials to grow larger
• Raw mater to repair damaged body parts
Vitamins A-D what are they found in and what do they give you
Vitamin A- found in Liver,butter and it gives you healthy skin and teeth
Vitamin B- found in cheese, milk and it gives you healthy skin
Vitamin C- found in potatoes and citrus fruits and it gives you healthy teeth and gums(without it you get scurvy)
What happens to the food in our bodies
It is digested(broken down)
What is physical digestion
Physical digestion is the process of breaking down food into smaller pieces through mechanical actions like chewing
What is chemical digestion
This is when enzymes and acids break down food into smaller molecules that can be me absorbed to the body
What is enzymes
Enzymes are chemicals, which act to speed up chemical reactions.
What are fats made up of
A molecule of glycerol phosphate
How does respiration differ from breathing
Respiration is the overall process of obtaining energy from food using oxygen while breathing is the process of inhaling oxygen and exhaling carbon dioxide
What are four factors which affect breathing rate and explain it
•Physical activity- when we exercise our muscles require more oxygen
•Emotions- strong emotions like stress or excitement, when we’re anxious our breathing rate may become rapid
•Altitude- the air has lower oxygen level so our bodies compensate by increasing
•Medical conditions- asthma or lung diseases can affect our breathing rate
What is the difference between aerobic and anaerobic
Aerobic means with oxygen and anaerobic means without oxygen
What happens from the time blood enters the pulmonary vein until it returned to the lungs via pulmonary artery
It carries oxygenated blood from the lungs to the heart through the pulmonary vein with oxygen, then to the body through the aorta. After the body uses the oxygen, it returns to the heart through the vena cava and goes back to the lungs through the pulmonary artery for more oxygen.
Major bone of the skeleton system
Cranium- the bone that protects the soft tissue of the brain
What is the clavicle
Also know man as the collar bone connects the sternum (breast bone) to the shoulder bone
What is the scapula
(Shoulder blade) the sturdy, flat triangular bone that connects the clavicle to the humerus
What is the vertebral column
(Spine) this is a combination of bones, muscles and other tissues that reach from base of the skull to the tailbone
What is the humerus
This is the long bone in the upper arm that connects the shoulder to the elbow
What is the ulna
(Elbow bone) two bones that make up the forearm
What is the radius
One of the two bones in the forearm that extends from the elbow to the wrist
What is the function of the kidney
To excrete metabolic waste, mainly urea from the body
To regulate the volume and concentration of the blood plasma and body fluids
What is homeostasis
The maintaining of a constant internal environment
What happens if the blood glucose level decreases
The glucagon passes into the blood and is carried to the liver
The normal level of glucagon is restored
Heat loss to cool the body i.e. when temperature of the body rises above 37 °C
When you are too hot:
● More blood flows to the surface of the skin.
● More heat is lost from the blood through the skin by radiation.
Heat gain to warm the body i.e.when body temperature falls below 37°C
When you are cold:
● Less blood flows to the surface of the skin and less heat is lost.
● Metabolic rate increases causing more heat to be produced.
What does liver produce
Liver produces bile
