Histology Review Part 3

ovary

• primordial follicle (just under epithelium, no zona pellucida)

• primary follicle (zona pellucida with no antrum)

• secondary follice (has an incomplete antrum)

• mature graafian (complete antrum)

• remember they all have primary oocytes regardless of what follicle it is. It is the LH surge that triggers the completion of meiosis and you can’t tell that by looking at the slide!

• corona radiata

• zona pellucida

• cumulus oophorus

• interstitial cells (secrete estrogen)

• theca interna (produce androsteindione under the influence of LH)

• granulosa cells (turns androstenedione into estrogen under the influence of FSH)

• get the hormone thing down he will ask it as a secondary question

• atretic follicle (collapsed zona pellucida)

• germinal epithelium

• corpus luteum (big white thing that is somewhat cellular)

elastic cartilage

• looks “dark and creepy”

• has elastic fibers in it (duh) as well as collagen type 2

nerve longitudinal section

• be able to identify that it is nerve (and not tendon or muscle)

• *Node of Ranvier (know this one for sure)

• a stupid little horizontal line that you can barely see but you know it is nerve and it doesn’t look like anything else

nerve cross-section (on same slide as above)

• axon vs. myelin sheath

• schwann cell (nuclei that you see)

• endo vs. epi vs. perineurium

cross section of spinal cord

• neuron cell body

• nucleus vs. nucleolus

• lipofuscin granuoles

brown stuff that accumulates in cells that don’t divide

• Nissel bodies (ER)

  • can’t really see but blue stuff closer to the nucleus, when in doubt pick lipofuscin granules

• Be able to tell the difference between cardiac (intercalated disks), skeletal (striated), and smooth muscle.

cerebellum

• molecular layer (outside, has dendrites of Purkinje cells)

• granular layer (inside, has axons of Purkinje cells)

• **Purkinje cell (likely to be a question)

blood

• platelet (formed from megakaryocyte)

• neutrophil (multi-lobed nucleus, most common)

• monocyte vs lymphocyte

• lymphocyte is roughly the size of a RBC and a momcyte is much larger and also has a kidney shaped nuclueus (sometimes not always)

• eosinophil (pink-red granuoles)

• basophil (dark granules filled with histamine, so dark that you can barely see the nucleus but you can clearly make out the granuoles however, these are rare and you probably will not see one on your slide)

Well, that is about 99.9% of what you will get on your practical so if you manage to learn all of that you will most certainly get an A. Remember that the histo practical is an easy way to bring up your grade if you need to, so don’t miss out on the opportunity because you didn’t dedicate enough time to it. The key to doing well is good time management which means being organized and also getting enough sleep. That is the best thing you can do for yourself.

Category: Anatomy Notes