BIOLOGY WARM-UPS

REQUIREMENTS FOR LIFE

Untitled Slide

Untitled Slide

NUTRIENTS

• Carbohydrates (sugar/starch)
• Fats
• Proteins
• Vitamins/minerals

RESPIRATION IS:

Untitled Slide

• Process that converts sugar to ATP
• ATP is an energy form our cells can use
• Chemical equation??

ORGANISATION HEIRACHY

• Cells
• Many cells form tissues
• Many tissues form organs
• Organs work together in a system

THE SYSTEMS IN HUMAN BODIES ARE:

SKELETAL

• To support and protect

DIGESTIVE

• Physically and chemically break down food
• Absorb nutrients from food into the body

EXCRETORY

• Filters blood to remove wastes
• Main organ - kidney, bladder
• Tissues - ureter, urethra

ENDOCRINE

• Release hormones in response to changes
• Organs: hypothalamus, pituitary, adrenal etc

NERVOUS

• Detect internal and externalstimuli
• Respond to stimuli
• Organ: brain
• Tissue: spinal cord, nerves

MUSCULAR

• Special contractile tissue attached to skeleton
• Moves the body

CARDIOVASCULAR

• Transports oxygen and nutrients to cells
• Transports waste products to excretory organs

THE HEART

• 4 chambers
• 2 atria and 2 ventricles

Untitled Slide

TISSUES

• Arteries - away from heart
• Veins - back to heart
• Capillaries - absorbs nutrients/wastes

HOMEOSTASIS