Cells
What is a cell membrane?
regulates what enters and leaves the cell
What are the four major types of tissue?
1. epithelial
2. connective
3. muscle
4. nervous
function of skeletal system
- supports and protects
- helps with body movement
- blood cell formation
- stores inorganic materials
what is actin and what is myosin and another name for them
actin: thin filaments - I bands
myosin : thick filaments - A bands
what 3 things does the nervous system include
brain, spinal cord, and the nerves
Name two types of transport in a cell, what they require and why
Active transport: requires energy because it moves AGAINST the concentration gradient
Passive transport: requires NO energy because it moves WITH the concentration gradient
Three types of muscle tissue. include location and whether they are involuntary or voluntary.
Skeletal: skeletal muscles/voulntary
Smooth: hollow organs/involuntary
Cardiac: wall of the heart/involuntary
difference between osteoblasts and osteoclasts?
osteoblasts = create osteocytes(build)
osteoclasts: bone resorption(consume)
A muscle is composed of many ___(a)____ arranged in bundle of __(b)____.
what are a and b?
a - fibers
b- fasicles
two divisons in the nervous system and what they include
Central nervous system : brain and spinal cord
Peripheral nervous system: nerves throughout the body
Name the phases of mitosis and what happens in each stage
Prophase:chromosomes appear, centrioles move to poles,nucleus disapears, spindle forms
Metaphase:chromosomes line up at the equator
Anaphase: chromatids seperate and move to opposite poles
Telophase: chromosomes disapear, centrioles duplicate,nucleus reforms , spindle disapear
Cytokenesis: cell splits into 2 duaghter cells
5 functions of epithelial tissue
1. protection
2. secretion
3. absoprtion
4. execretion
5. senses
types of diarthrotic joints and where you would find them
ball and socket: shoulder/hip
hinge: elbow/knee
pivot: lower arm
sadde: thumb
3 different layers of connective tissue within a muscle
epimysium
perimysium
endomysium
3 main parts of a nueron and their function
1. cell body - contains nucleus and other cell organelled
2. dentrites - recieve information
3. axon -conducts informations away from a cell
What does cellular respiration require
glucose and oxygen
3 common types of connective tissue and their function
mast cells: prevent clots
macrophages: consumers/destruct certain organisms
fibroblasts: produce fibers
name all sutures in a skull
coronal
lambodial
squamosal
sagittal
what is a neuromusuclar junction?
where a nerve and muscle fiber come together
Types of neuroglial cells
1. microglial
2. oligodendrocytes
3.astrocytes
4.ependymal
5.schwann
The nucleus and nucleulus do what?
Nucleus :directs cell activity, contains genetic information (DNA)
Nucleolus: produce ribosomes
What is Adipose Tissue
fat beneath the skin
how may true, false, and floating ribs are there
true: 7
false: 3
floating: 2
what are the two rules of protiens in the sliding filament theory?
1. protiens like to chnage shape when stuff binds to them
2. changing shapes can allow protiens to bind and unbind with other stuff
what part of the brain regulates sleep cycles, respiratory processes, and motor control
the pons