Lab 1 Flashcards
1
Q
stem cell
A
undifferentiated cell
2
Q
totipotent
A
can become any type of cell
3
Q
pluripotent
A
can become a large number of different cells (more than multipotent)
4
Q
multipotent
A
can becoem a moderate number of different cell types (less than pluripotent)
5
Q
4 types of tissue
A
connective, muscle, neural, eptihelial
6
Q
skeletal muscle
A
- voluntary and graded contraction skeletal or non skeletal movement
- striations due to actin and myosin arrangement
- multi nuclei, very straight
- graded since each myofiber innervated by its own neuron
7
Q
cardiac muscle
A
- involuntary and nongraded contraction
- only found in heart
- striated, branched fibers, intercalated discs, single nuclei
- connected by gap junctions that allow voltage to pass between cells and desomosomes to hold them together
- contractility = strength of contraction, can change
8
Q
smooth muscle
A
- fusiform = thick in middle and thin on the sides
- involuntary movement, not striated, one nucleus per cell, layered
- lines organs, blood vessels, bronchioels
9
Q
nervous tissue - 2 main components
A
neurons and neuroglial cells
10
Q
neuroglial aka glial cells
A
cells that support neurons
11
Q
neuron - 3 main parts
A
- dendrites recieve signal and bring it to cell body and signal travels away through the axon
12
Q
syncytium
A
myoblast (cells) –> myofibers –> syncytium (1 functional unit)
13
Q
layers of epithelial tissue
A
epithelial cells –> basement membrane –> connective tissue
14
Q
epithelial cell shapes
A
- squamous = flat and wide
- cuboidal = cube shaped
- columnar = like a column
15
Q
epithelial layer classification
A
- simple = 1 layer
- stratified = 2 layer
