Formative Flashcards
What is dark field used for
routine detection of syphilis and malaria.
What is Phase contrast used for
enhancing the image of unstained cells.
Describe confocal microscopy
Illumination, achieved by scanning one or more focussed beams of
light across a thick fluorescently labelled specimen, eliminates ‘out of
focus flare’.
Describe how fluorescent microscopy is used
UV radiation is often used as the incident radiation and fluorochrome
conjugated monoclonal antibodies as the stain.
Which part of the adrenal gland is under nervous control?
Medulla
Where are the parathyroid glands located?
Posterior to the thyroid
Where is the thyroid gland located
In the base of the neck, adjacent to, and anterior to the trachea (actually wrapped around the ventral and lateral trachea)
What does parathyroid hormone do?
Stimulates osteoclast resorption of bone
Reduces calcium loss to urine from kidney
Promotes calcium uptake from the gut
Where does the pancreas release its secretory products?
Digestive enzymes released into the duodenum via secretory ducts
Hormones released into the bloodstream
What is the primitive yolk sac formed from?
Hypoblast lining the blastocyst cavity
True or false:
Cells of the blastocyst are totipotent
False (pluripotent)
True or false:
Each of the 3 germ layers are derived from the epiblast
True
At which developmental stage does the conceptus implant
Blastocyst
What is the gram stain if lipopolysaccharide is present in bacterial cell membrane?
Gram negative (pink)
Average diameter of a human cell
20-40um
