BIOL 065 Lecture Notes - Lamellar Corpuscle, Sunburn, Radiation Burn

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20 Sep 2013
School
Course
Embryology, Cell and Skin
LAB: (Need to know functions of organelles!)
1. Cell Membrane
a. Regulates entry and exit of molecules found in cell
2. Cytoplasm
a. Liquid phase of the cell
3. Nucleus
a. Found near center of the cell and usually round
b. Contains loosely coiled strands of DNA
4. Chromatin
a. Loosely coiled strands of DNA
b. Found in Nucleus
5. Nuclear membrane
a. Envelope of nucleus that regulates molecules
6. Nucleoli
a. Protein synthesis
7. Ribosome
a. Extensive network of specialized membranes
8. Rough Endoplasm Reticulum
a. Protein synthesis
9. Smooth Endoplasm Reticulum
a. Lipid and steroid synthesis
10. Golgi Apparatus
a. Package the proteins released from Rough ER
11. Mitochondria
a. Makes ATP
12. Polyribosomes
a. Group of ribosomes that freely float in the cytoplasm
13. Centrioles
a. Tubules arranged at right angles to one another
b. Control movements of chromosomes during cell duplication
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14.
LECTURE:
1. Embryology
a. Cells begin to divide rapidly
b. Form 3 Primary Germ layers
i. Ecledem (outermost layer skin)
ii. Mesoderm (middle layer skin)
iii. Endoderm (innermost layer skin)
c. Yolk sac gives nutrients, oxygen to embryo
i. 3rd week: blood islands ->primitive blood cells
ii. 4th week: heart begins to beat
iii. 5th week: liver and spleen produce blood cells
2. Cells
a. 200 distinct cell types
i. Simple
ii. Stratified
iii. Pseudostratified
iv. Squamous
v. Cuboidal
vi. Columnar
vii. Ciliated
b. Cell Structure
i. Nucelus
1. Isn’t always in the center
2. Neuron nucleus is at the edge of the cell
ii. Rough Endoplasmic Reticulum
iii. Smooth Endoplasmic Reticulum
iv. Mitochondria
1. Makes ATP and energy
v. Centrioles
1. Make spinder fibers to duplicate DNA, split into two
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