Biology notes - Body Systems - 23-10-2024

Integumentary Sytem

• outer coverings

• Structure- skin, hair and nails

• Function- barrier(to germs and inquires) and sensoring organ and temperature regulation

Skeletal System

• Structure- bones and cartilage

• Function- supports, protects organs and muscle attachment

Muscular System

• Structure- striated muscles(skeletal and voluntary), Smooth muscles(involuntary), and cardiac muscle(involuntary)

• Function- generates heat and creates movement

Circulatory System

• Structure- heart blood and blood vesicles

• Function- transports most things through blood

Respiratory System

• Structure- diaphragm and lungs as well as the associated tubes

• Function- bring O₂ and remove CO₂

Digestive System

• Structure- mostly stomach and intestines

• Function- breaks down food and eliminates solid waste

Excretory(Urinary) System

• exit

• Structure- liver kidneys, and the bladder

• Function- The removal of waste(excretion of liquid)

Reproductive System

• Structure- male: testes and penis, Female: ovaries, uterus and vagina

• Function- survival of species

Nervous System

• Structure- Brain, Spinal cord, nerves and sense organs

• Function- stores and analyses information

Endocrine System

• nerves

• Structure- glands(thyroid(Schilddrüse)

• Functions- secretes hormones(chemical messengers that have targets of cells)

Immune and Lymphatic System

• Structure- white blood cells(wbcs) and lyphnodes

• Functions- Protection of disease