Anatomy exam Flashcards
X-ray
Pros- relatively cheap and fast
Cons- harmful, static, may need contrast solutions for soft tissue
Ultrasound
pros- relatively safe, live image
cons- hard to use around bone (ex. brain), or air spaces (ex. bowel or lungs)
—-Sound waves are bounced, or reflected, differently by various structures.
Sound waves hitting a moving object experience Doppler Shift, allowing you to track their direction and speed
Computed techonolgy (CT)
Pros-excellent resolution, 3d rendering
Cons-high radiation exposure, time consuming, expensive
–Many x-rays circle the body, generating a three-dimensional x-ray image
MRI
Pros-relatively safe, live image, can see active tissues (fMRI)
Cons-uncomfortable, time-consuming, expensive
—Detects radio pulses given off when a radio wave is passed through a tissue under a strong magnetic field
PET
Radioactive sugar or water injected into bloodstream are taken up by active tissues
-find tumors
Haematoxylin
Generl purpose usually wiht Eosin (blue -purple)
-Structures containing (-) charged substances like nucleus and ER
eosin
(pink)
-(+) charged molecules, especially amino groups in cytoplasmic proteins
silver
neurons
(Black)
Methylene Blue
blood cell, nucleic acid (blue)
Toluidine
Histopathology, examination of small structures
(Mastocytes = purple
Cartilage = purple
Mucins = purple/red
Nuclei = blue)
Cartilage ground substance
firm but flexible, hyaluronic acid
cartiage fiber
collagen
cartilage cell type
chondroblast
bone ground substance
rigid due to calcium salts
bone fiber
collagen