Organization of the Body

The Body is composed of…

cells

Tissues

cells grouped together

Organs

collections of different tissues working together

Systems

groups of organs working together

Circulatory System

transports blood throughout the body

Lymphatic System

includes lymph vessels and nodes that carry a clear liquid called lymph. It contains white blood cells (lymphocytes) that fight against disease

Digestive System

brings food into the Body and breaks it down to enter the bloodstream.

Organs : mouth, stomach, intestines

Endocrine System

sends chemical messengers (hormones) into the blood to act on other glands and organs

The Female and Male Reproductive System

produces cells, that join to form the embryo, which develops in the uterus of a female.

Musculoskeletal System

muscles, bones, joints and other connective tissue that allows the body to move

Nervous Systems

carries electrical messages to and from the brain and spinal cord

Skin and Sense organ system

includes skin, eyes and ears. Receives messages from the environment and sends them to the brain.

Urinary System

produces urine and sends it out the Body through the kidneys, ureters, bladder and urethra

Cranial Cavity

located in the head and surrounded by the skull

Thoracic cavity

the chest cavity containing the lungs, heart, trachea, esophagus, and bronchial tubes

Pleura

membrane surrounding the lungs

Pleural Cavity

The space between the pleural membrane

Mediastinum

large area between the lungs

Abdominal Cavity

the space below the thoracic cavity

Diaphrapgm

the muscle that separates the abdominal and thoracic cavity.

peritoneum

a double membrane that attaches to the abdominal organs

Pelvic Cavity

surrounded by the pelvis, containing the urinary bladder

Spinal Cavity

space surrounded by the backbones

Spinal column

back bones

Spinal Cords

the nervous tissue within the spinal cavity

Division of the back; cervical (neck)

7 bones

Division of the back; Thoracic (chest)

12 bones

Division of the back; Lumbar (waist)

5 bones

Division of the back; sarcal (lower back)

5 fused bones

Division of the back; Coccygeal (tailbone)

4 fused bones