Structural Organization of Human body

Chemical Level

Subatomic particles that go to atoms and then molecules

Subatomic particles

Tiny particles that make up atoms which are

Protons: Plus, Electrons: Negative, Neutrons: Neutral.

Atoms

Smallest units of an element: H,O,N,C

Molecules:

Two or more atoms combines: WATER

Organelles

Made from molecules (found in cells)

Cell Level

Smallest independently functioning unit of a living organism

What does Cell level include?

Muscle, Nerve, blood, bone, and skin cells

Tissue Level

Group of similar cells that work together

Epithelial Tissue

Covers and protects surface

Example of Epithelial Tissue:

Skin and lining of organs

Connective Tissue

Supports, connects, and protects the body parts

Example of Connective Tissue:

Bones, cartilage, fats, blood

Muscle Tissue

Allows movement by contracting

Examples of muscle tissue:

Skeletal, cardiac, and smooth muscle

Nervous Tissue

Sends and receives electric signals

Example of Nervous Tissue

Brain, Spinal cord, and nerves

Organ Level

2+ tissue work together

Examples of organ level:

Heart, lungs, brain,kidney, stomach, and liver

Organ system

Group of organs work together

Examples of Organ System

Mouth to esophagus to stomach to small to large to liver to gallbladder to pancreas

Organism Level

Highest level aka YOU

Integumentary System Function

It PROTECTS, REGULATES TEMP, HELPS WATER LOSS, AND PRODUCE VITAMIN D

integumentary system Organs

Skin, hair, and sweat glands

Skeletal System function

Protection,

support,

allows movement

produces blood cells

stores minerals and fats

Skeletal System Organs

Bones, cartiage, ligaments, and joints

Muscular System Function

produces body movements

maintains posture

produces body

Muscular System organs

muscles attached to the skeleton by tendons (skeleton muscles)

Nervous System function

• Rapid communication

• Sensory information

• Controls and coordinates body activities

Nervous System organs

brain

spinal cord

nerves

sensory receptors

Endocrine System Function

Produces hormones that regulate body processes.

Endocrine System organs

• Pituitary gland

• Thyroid gland

• Adrenal glands

• Pancreas

• Ovaries/testes

Cardiovascular System Function

Transports substances throughout the body.

Cardiovascular System organs

• Heart

• Blood

• Blood vessels

Lymphatic/Immune System Function

• Helps defend against disease

• Returns fluid to the bloodstream

Lymphatic/Immune System Organs

• Lymph nodes

• Lymphatic vessels

• Spleen

• Thymus

Respiratory System Function

Gas exchange

Respiratory System Organ

• Nose

• Pharynx

• Larynx

• Trachea

• Bronchi

• Lungs

Digestive System Function

Breaks down food and absorbs nutrients

Digestive System organ

• Mouth

• Esophagus

• Stomach

• Small intestine

• Large intestine

• Liver

• Gallbladder

• Pancreas

Urinary System Functions

• Removes waste from blood

• Produces urine

• Helps regulate water and electrolytes

Urinary System Organ

• Kidneys

• Ureters

• Urinary bladder

• Urethra

Female reproductive system Functions

produces eggs + produces hormones + allows fertilization + supports pregnancy + allows childbirth.

Female reproductive system organ

Ovaries

Uterus

Vagina

Uterine tube

mammary gland

Male reproductive system Function

produces sperm + produces testosterone + stores/transports sperm + produces semen + delivers sperm

Male reproductive system Organs

estes → Epididymis → Vas deferens → Urethra → Penis