Organ Systems of the
Human Body
Ms Clark
PVMHS
Integumentary System

Components:
◦ Skin and structures derived from it (hair, nails,
sweat and oil glands)

Functions:
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Forms the external body covering
Protects the body
Eliminates some wastes
Helps make vitamin D
Detects sensations such as pressure, pain,
heat, and cold.
Integumentary System
Skeletal System

Components:
◦ Bones, joints, cartilages

Functions:
◦ Protects and supports body organs
◦ Provides framework that muscles use to
cause movement
◦ Blood cells are formed within bones
◦ Stores minerals
Skeletal System
Muscular System

Components:
◦ Skeletal muscle tissue – muscle usually
attached to bones

Functions
◦ Movement
◦ Maintaining posture
◦ Producing heat
Muscular System
Nervous System

Components:
◦ Brain, spinal cord, nerves, and sense organs
such as eyes and ears

Functions:
◦ Regulates body activities through nerve
impulses by detecting changes in the
environment
◦ Responds to changes by activating appropriate
muscles and glands
Nervous System
Endocrine System

Components:
◦ All glands and tissues that produce hormones
(chemical regulators of body functions)

Functions:
◦ Secrete hormones that regulate processes
such as growth, reproduction, and
metabolism.
Endocrine System
Cardiovascular/Circulatory System

Components:
◦ Heart, blood, blood vessels

Functions:
◦ Transport blood throughout body
 Blood carries oxygen and nutrients to cells
 Blood carries carbon dioxide and wastes away from
cells
Cardiovascular/Circulatory System
Immune/Lymphatic System

Components:
◦ Lymphatic fluid and vessels; spleen, thymus,
lymph nodes, tonsils

Functions:
◦ Picks up fluid leaked from blood vessels and
returns it to blood
◦ Protects body against disease-causing
organisms
Immune/Lymphatic System
Respiratory System

Components:
◦ Lungs, pharynx (throat), larynx (voice box),
trachea (windpipe), bronchus

Functions:
◦ Keeps blood supplied with oxygen
◦ Removes carbon dioxide
Respiratory System
Digestive System

Components:
◦ Mouth, esophagus, stomach, small and large
intestines, rectum, anus

Functions:
◦ Breaks down food so that it can be absorbed
into blood and distributed to cells
◦ Eliminates solid wastes
Digestive System
Urinary/Excretory System

Components:
◦ Kidney, ureter, urinary bladder, urethra

Functions
◦ Eliminates nitrogenous wastes from the body
◦ Regulates volume and chemical composition
of the blood
◦ Maintains body’s mineral balance
◦ Helps regulate red blood cell production
Urinary/Excretory System
Reproductive System

Components:
◦ Female: Ovaries, uterine tube, uterus, vagina,
mammary glands
◦ Male: Testes, penis, vas deferens, prostate
gland, seminal vesicles

Functions:
◦ Production of offspring
 Provides for conception and childbearing
Reproductive System