Download Human Body Systems

Human Body Systems
and
Functions
 Skeletal
Serves as the anchor for all the body’s movements
2. Provides support
3. Protects soft organs inside the body
 Muscular
1. Provide movement
2. Maintain body temperature
3. Maintain posture
 Digestive
1. Absorb nutrients
2. Absorb water
3. Remove waste
1.
 Respiratory
1.
To get oxygen from the environment
2.
Remove carbon dioxide and other waste
 Urinary
1.
To filter liquid waste from the blood
 Circulatory
1.
Deliver oxygen to the body
 Immune
1.
Defends against pathogens and disease
 Integumentary
1.
Repels water
2.
Guards against disease
3.
Helps maintain homeostasis
4.
Senses the environment
 Endocrine
1.
To control the conditions in your body by making and sending
chemicals from one part to another.
 Nervous
1.
Detects and interprets information
2.
Controls most of the body’s functions
Sample question
 Which
function summarizes the excretory
system?
 A.
It removes waste
 B.
It collects oxygen
 C.
It attacks diseases
 D.
It delivers nutrients
Human Body Systems
Organs
 Skeletal
1.
Bones
 Muscular
1.
Cardiac Muscles – The Heart - Involuntary
2.
Smooth Muscles – Digestive - Involuntary
3.
Skeletal Muscles – Voluntary
4.
Cartilage – cushion between your bones that acts as a shock
absorber
5.
Tendons- attaches muscle to bone
6.
Ligaments- attaches bone to bone
 Digestive
1.
Salivary Glands – moisten foods and enzymes break down food.
2.
Esophagus – carries food from the throat to the stomach through
peristalsis.
3.
Stomach – mix and mash food particles
4.
Small Intestine – nutrients are absorbed into the bloodstream.
5.
Large Intestine - absorbs water and some other nutrients
6.
Pancreas – to regulate glucose in the bloodstream
7.
Liver – secretes bile for digestion and removes toxins from the
blood.
8.
Gall Bladder – stores bile
9.
Rectum – eliminates waste from the body

Respiratory
1.
Nose – allows oxygen to enter the body
2.
Trachea – connects the throat to the bronchial tubes
3.
Larynx/Voice Box – helps with breathing and sound production
4.
Lungs – responsible for breathing in oxygen and exhaling out CO2
5.
Bronchial Tubes – branches which connect the trachea to the lungs
6.
Alveoli – tiny sacs (1-cell thick) at the end of the bronchial tubes which
exchange oxygen and carbon dioxide within the blood
7.
Ribs – encloses the thoracic cavity
8.
Diaphragm – a large muscle that stretches across the floor of the
thoracic cavity

Urinary
1.
Kidneys – filter blood
2.
Ureters – tubes which carry waste from the kidneys to the bladder
3.
Bladder – sac that store liquid waste and has a wall of smooth muscle
4.
Urethra – tube that carries liquid waste outside of the body

Circulatory
1.
Heart – pumps oxygen-poor blood to the lungs and oxygen-rich blood to
all parts of the body.
2.
Veins – blood vessels that carry blood toward the heart
3.
Arteries – blood vessels that carry blood away from the heart
4.
Capillaries – tiny blood vessels that connect arteries with veins
 Immune
1.
Lymph Nodes – acts as a filter or traps foreign particles
2. Spleen – remove old red blood cells and stores blood
 Integumentary
1.
Skin
a.
Epidermis – outer layer of skin
b.
Dermis – inner layer of skin
2.
Hair
3.
Nails

Endocrine
1.
Thyroid – Necessary for metabolism
2.
Pancreas – regulates glucose
3.
Adrenal Gland – regulates carbohydrates, proteins, fats, metabolism,
water and salt levels

1.
Nervous
Central Nervous System
a. Brain
b. Spinal Cord
2. Peripheral Nervous System
a. Sensory Nerves
b. Motor Nerves
3. Autonomic Nervous System – involuntary (heart, stomach)
4. Voluntary Nervous System – voluntary (skeletal muscles)
Interactions
 Skeletal
1.
Bone Marrow- makes red blood (circulatory)
2.
Rib Cage- protects lungs and heart (respiratory and circulatory)
3.
Muscular – attaches muscles to bones
 Muscular
1.
Skeletal – attaches muscles to bones
2.
Circulatory – brings nutrients to the muscles
3.
Digestive – stomach and esophagus (smooth muscles)
 Digestive
1.
Endocrine – pancreas
2.
Circulatory – nutrients absorbed in the blood stream
3.
Muscular – stomach and esophagus (smooth muscles)

Respiratory
1.
Circulatory- receives oxygen from the red blood cells
2.
Nervous – controls breathing
3.
Immune – foreign particles in the lungs trigger the immune
system to remove particles

Urinary
1.
Endocrine – adrenal glands release chemical to allow kidneys
to regulate fluids in the body
2.
Circulatory - blood is cleansed and liquid waste is removed
3.
Muscular – regulate and release urine

Circulatory
1.
Muscular – blood brings nutrients and oxygen to the muscles
2.
Digestive – nutrients in the small intestine are absorbed in
the bloodstream
3.
Respiratory – oxygen and carbon dioxide are exchanged from
the blood to the alveoli in the lungs
Immune
1. Respiratory - foreign particles in the lungs trigger the immune
system to remove particles
2. Skeletal – immune cells are found in bone marrow
3. Digestive – appendix and tonsils help decide what is food or
pathogens
 Nervous
1.
Muscular – your brain tell your muscles to move
2.
Digestive - triggers the start of digestion and release of many
hormones and enzymes throughout your body.
3.
Endocrine – your brain decides when hormones are created
Sample question

How do the respiratory and circulatory systems work
together?

A. The respiratory system takes in carbon dioxide, while
the circulatory system delivers carbon dioxide to the cells

B. The circulatory system takes in carbon dioxide, while
the respiratory system delivers carbon dioxide to the cells

C. The respiratory system takes in oxygen, while the
circulatory system delivers oxygen to the cells

D. The circulatory system takes in oxygen, while the
respiratory system delivers oxygen to the cells