Anatomy FINAL Flashcards
Mitochandria
Produces ATP
Cytoplasm
Jelly-like fluid inside the cell
Endoplasmic reticulum
It usually has ribosomes attached and is involved in protein and lipid synthesis.
Cell membrane
the semipermeable membrane surrounding the cytoplasm of a cell.
Nucleus
Contains genetic material
Cell differentiation
a process in which cells become specialized.
Tissue
a group of cells that have similar structure and that function together as a unit.
Cell
the smallest, basic unit of life that is responsible for all of life’s processes
Muscle tissue
Generates force for movement
Epitheleal tissue
Covering/lining of body parts
Connective tissue
Holds in place, connects, and integrates the body’s organs and systems
Nervous tissue
sends and receives impulses through electrochemical signals.
Epidermis
Top layer of the skin. Made of epitheleal cells and it’s the protective layer. Avascular = no blood vsesels
Dermis
Middle layer of skin. Makes up most of the skin. Made of connective tissue. Vascualr = Blood vessels.
Hypodermis
not part of the skin. Deepest layer. Made of adipose (fat) tissue.
Keratinocytes
produce keratin
Langerhan cells
ingests foreign substances and activates immune system
Melanocytes
produce melanin
Merkel cells
tactile (sensory) cells
Dermal papillary
Bumps that bind the epidermis & dermis; creates fingerprints
Meissner’s corpuscle
sense light touch
Capillary loops
Blood vessels used to exchange substances and wastes
Free nerve endings
sense pain, heat, cold, itching, and tickling
Arrector pili muscle
contracts to raise hair on end
Sebaceous gland
Gland that secretes oil
Sudoriferous gland
Gland that secretes sweat
Pacinian corpuscle
Senses heavy touch
Adipose tissue
adheres skin to the underlying muscle
Sensory nerve
Sends message from body cells to brain
Motor nerve
Sends message from the brain to body cells
Blood vessels
a tubular structure carrying blood through the tissues and organs; a vein, artery, or capillary.
Main functions of the skeletal system (5)
Supports the body
Movement
Protects internal organs
produces blood cells
stores and releases minerals and fats
2 main divisions of the skeletal system
Axial (skull, ribs) (inside) and appendicular (arms, legs, hips) (outside)
Where are the long bones located
Arms and legs
Where are irregular bones located
spine and skull
How are bones categorized?
Shape and function
Long bone
Leverage
Short bone
Provides stability while allowing for some motion
Flat bone
Points of attachment; protectors of internal organs