excitable cell Flashcards
what is physiology
the study of how the human body FUNCTIONS
order of material where we are made up
organism, organ system, organ, tissue, cells
internal vs external environments of body
internal environment
- muscular system (muscles)
- nervous system (brain, spinal cord, nerves)
-endocrine system (hormones)
-circulatory system (blood)
organs systems work continuous with external environments
etc. digestive system, food from external eniviroment
etc. breath in air from outside environment
etc. reproductive system
nucleus function
stores and replicates genes (DNA)
nucleolus
forms rRNA and synthesizes ribosomes (make protein)
ribosomes function
synthesis polypeptides (protein) in the systole and rough er
rough endoplasmic reticulm
protein are synthesized by ribosomes and than prepared to be exported
smooth endoplasmic reticulum
synthesizes lipids are lipid containing molecules such as phosolipids that make up membranes
microtubule
provide structure and shape and aid in movement
nucleopore
channels of selective transport of nucleic acids and protein in and out of the nucleus
cytoplasm
jellylike
surrounds everything within the cell membrane
mitochondrion
-powerhouse of the cell
-cellular respiration, breaks down organic molecules into starch, glycogen and glucose– makes ATP provides energy
lysosomes
garbage collector
breakdown of macromolecules
Golgi body
-receives proteins from ER (sort and packages)
- some proteins are stored and some are modified into tertiary forms
fold protein into usuable shape/ add
centrioles
spindle fiber formation/ development used during cell division to separate the sister chromatids into chromosomes
