nstp m2

• levels of organization
• cells- work together to form tissues
• tissues- work together to form organs
• organs work together to form organ system
• 10 organ system in the human body
• respiratory system is the system that supplies oxygen and remove carbon from the blood
• reproductive system is the system that propagates species
• female: ovary, fallopian tube, uterus, vagina
• musculoskeletal system is the system that give form to the body
• skeletal system- includes bones, cartilage, and teeh
• 206- how many bones are there in human body
• joints- where 2 or more bones come together;
• 3 types of joints
• muscular system works with the skeletal system to provide movement
• 3 type of muscles
• voluntary muscles move under your control
• involuntary muscles that move without you controlling
• smooth- found only in digestive tract and blood vessel walls
• skeletal muscles attached to bone
• integumentary system includes your hair, nails, and skin
• INTEGUMENTARY SYSTEM largest organ system in your body
• SKIN it is your body's first line of defense
• melanin absorbs ultraviolet radiation from the sun
• epidermis top layer of skin, most cells are dead
• dermis under epidermis, allows skin to bend without tearing
• axial region-axis of our body
• perpendicular region- limbs or appendages or body parts that attached o the axis
• frontal plane- vertical line that divide the body to anterior and posterior parts
• transverse plane horizontal plane which divide body into superior and inferior.
• dorsal cavity protects nervous system
• 2 subdivisions of dorsal cavity
• ventral cavity houses visceral organs
• 2 subdivision of ventral cavity