cells
individual units found in all parts of the body
tissues
similar cells grouped together to do a specific job
organs
structures composed of several kinds of tissue
systems
groups of organs working together to perform complex functions
circulatory
heart, blood, blood vessels
digestive
brings food into the body and breaks it down so it can enter the blood stream
endocrine
composed of glands; sends chemical messengers called hormones into the blood
female/male reproductive
produce the cells that join to form the embryo
musculoskeletal
muscles, bones, joints, connective tissues; supports the body and allows it to move
nervous
carries electrical messages to and from the brain and spinal cord
respiratory
controls breathing
skin and sense organ
skin, eyes, ears; receives messages from the environment and sends them to the brain
urinary
produces urine and sends it out of the body through kidneys, ureters, bladder, and urethra
cranial cavity
brain
thoracic cavity
lungs and heart
abdominal cavity
stomach, small and large intestines, spleen, pancreas
pelvic cavity
urinary bladder, urethras, urethra, rectum, anus, uterus
spinal cavity
spinal column and nerves of the spinal cord
cervical
neck region
thoracic
chest region
lumbar
waist region
sacral
sacrum/lower back region
coccygeal
coccyx or tailbone region
frontal (coronal) plane
vertical plane that divides body front to back
sagittal (lateral) plane
vertical plane that divides body into right and left sides
midsagittal plane
divides body vertically into right and left halves
transverse (axial) plane
horizontal plane that divides body into upper or lower portions (or cross-section)