Cells, Cells, and More Cells
_________ are organelles responsible for protein synthesis
ribosomes
When exposed to sunlight, skin synthesizes (creates) this important vitamin.
Vit D
Name of type of muscle tissue
The diffusion of water
osmosis
Name one kind of cartilage tissue.
___ are organelles that act as "trash collectors" of the cell by dissolving broken or worn down pieces of the cell. They also attack bacteria and dissolve them.
lysosomes
The skin is divided into three layers: the ___, dermis and hypodermis (subcutaneous layer)
Epidermis
This type of connective tissue stores fat and provides for cushion.
Adipose
When a cell expands, is it hypertonic, hypotonic, or isotonic?
hypotonic
Type of muscle that is in the walls of hollow internal organs.
smooth
Where is the nucleolus? What does it do?
Within the nucleus and makes ribosomes
___ is a skin condition (very common in teens) that occurs when bacteria become active in the sebaceous (oil) glands. Contrary to popular belief, chocolate does not cause this.
Acne
This type of flattened epithelial tissue (which consists of multiple layers) would be located in the back of your throat or down the esophagus, where constant friction would rub off cells.
The cell membrane is said to be selectively ___ because it allows certain substances in and out of a cell.
permeable
This tissue is specialized to stretch (distend) and lines the urinary system organs.
transitional
What does the cell membrane do?
Regulates the movement of materials into and out of the cell
___ are cells that add pigment (color) to your hair and skin. They release more melanin (pigment) when exposed to sunlight.
Melanocytes
This type of connective tissue is found between your vertebrae and acts as a cushion and shock absorber.
fibrocartilage
Active transport requires?
energy
Define a tissue
group of cells that perform similar functions
What is the function of cilia?
Make waving movements to sweep substances over the cell's surface
What are the 5 layers of the epidermis
stratum corneum, stratum lucidium, stratum granulosm, stratum spinosum, stratum basale
What is function bone, a type of connective tissue?
support the body, protect organs
Voltage-gated ion channels do what?
open or close in response to changes in the electrical charge across the cell membrane
Most abundant type of primary tissue in the body?