anatomy and physiology cells and tissues unit one

Centrioles

Help w cell division and organizing the organelles

Mitochondria

Aka “powerhouse of cell” it’s where energy is made

Cytoskeleton

Made of micro filaments (mini roads) and micro tubes (cell division and intercellular transportation)

Organelles

Makes up everything inside the cell

Cell membrane

Made of cholesterol protein and phospholipids. Semi permeable

Nucleus

Stores all genetic info. Nucleolus creates ribosomal RNA which helps w protein synthesis

Cytoplasm

gel like and helps organelles stay in place. Has filaments which are like roads

Endoplasmic reticulum

Rough makes protein and smooth make lipids

Golgi Apparatus

AKA “post office” takes glucose, ATP… and puts them into vesicles to get “shipped” out of the cell

Muscle tissue

Makes up everything that moves. Contractile. 2 main kinds smooth muscle (involuntary and lines uterus, GI…) skeletal muscle (voluntary and lines Skelton)

Connective tissue

Made of collagen, elastin and reticular fibers. Makes up adipose tissue, bones, cartilage and blood. This tissue gives structure.

Epithelial tissue

Creates boundaries and lines internal organs. Makes up skin. The inner layer is called apical and outer basal. Lil dots on the tissue is called protein sheets/ basement membrane and they block things from coming in n out of the tissue

Nervous tissue

Makes up neurons which makes up nerve cells. Sends chem signals and turns it into electrical impulse. Nerve cells have axons and dentrites which transports messages. Glial cells supports nervous system and provides nutrition… myelin sheath is arnd nerves to protect them