Cells The Living Unit Flashcards
What leads to different functions of cells
different
sizes
shapes
subcellular structures
Types of cells in the body
- erythrocytes
- fibroblasts
- epithelial
- skeletal muscle cell
- smooth muscle cell
- fat cell
- macrophage
- nerve cell
- sperm
The basic parts of human cells
- plasma membrane
- Cytoplasm
- nucleus
Classes of extracellular material
- interstitial fluid
- blood plasma
- cerebrospinal fluid
Substance that acts as glue to hold cells together
Extracellular matrix
membrane structures help to hold cells together through …
cell junctions
Cytoplasm is composed of
- cytosol (gel-like, soluble molecules)
- inclusions (insoluble molecules, vary w/ cell type)
- organelles
Ribosome
cytoskeleton
centrioles
Nonmembraneous
Contains its own DNA, RNA & ribosomes
Mitochondria
consist of a series of parallel, interconnected cisterns-flattened membranous tubes that enclose fluid filled interiors
endoplasmic reticulum
site of synthesis of many plasma membrane proteins & phospholipids
rough ER
site of synthesis of proteins to be secreted from the cell
rough ER
Network of looped tubules continuous with rough ER
Smooth ER
Cholesterol and steroid based hormone synthesis
smooth ER
makes lipids for lipoproteins
smooth ER
Absorption, synthesis & transport of fats
smooth ER
Detoxification of certain chemicals
smooth ER
stacked & flattened membranous cistern sacs
Golgi apparatus
cis-face
receiving side of Golgi apparatus
modifies, concentrates & packages proteins & lipids received from rough ER
golgi apparatus
trans-face
transport side of Golgi apparatus
Membranous sacs containing powerful detoxifying substances that neutralize toxins
peroxisomes
Plays a role in synthesis & breakdown of fatty acids
peroxisomes
spherical membranous bags containing digestive enzymes
lysosomes
