Chapter 4: Tissue Level Of organization Flashcards
What is Simple Squamous Epithelium?
Single layer of flat cells that resembles a tiled floor when viewed from apical surface, centrally located nucleus that is flattened and oval or spherical in shape.
What three parts can the cell be divided into?
- Plasma Membrane
- Cytoplasm
- Nucleus
What is the plasma membrane?
The plasma membrane is a flexible sturdy barrier that surround and contains the cytoplasm of the cell.
What are the two types of membrane proteins?
- Integral (transmembrane)
- Peripheral
What purpose does cholesterol serve in the membrane?
Cholesterol serves to stabilize the membrane and reduce its fluidity.
What molecules is the plasma membrane most permeable to?
The plasma membrane is the most permeable to small, nonpolar, uncharged molecules.
What does the smooth endoplasmic reticulum make?
Lipids, steroids, estrogen, testosterone, and oil from sebum gland.
What makes up the plasma membrane?
Phospholipid Bilayer
What is a concentration gradient?
The difference in concentration on outside and inside of plasma membrane.
What is an electrical gradient?
The difference between IONS on both side of the plasma membrane
What are the two ways substances are moved across a plasma membrane?
Passive Transport and Active Transport
What are the THREE different forms of passive transport?
Simple Diffusion
Facilitated Diffusion
Osmosis
What are the THREE methods of active transport?
Primary Active Transport
Secondary Active Transport
Vascular Transport
