Compound Microscope Parts: Quiz and Flashcards

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Questions and Answers

What is the function of the diaphragm in a compound microscope?

It condenses the light from the base illumination and focuses it onto the stage.

It connects the stage to the arm of the microscope.

It reflects light into the base of the microscope.

It adjusts the amount of light that reaches the specimen or slide from the base illumination. (correct)

What is the purpose of the mirror in a compound microscope?

To condense the light from the base illumination and focus it onto the stage.

To reflect light into the base of the microscope. (correct)

To connect the stage to the arm of the microscope.

To adjust the position of the mechanical stage vertically & horizontally.

What should be done if oil becomes hardened on the lens of a compound microscope?

Wipe it with a piece of cloth.

Leave it as it is.

Clean it with lens paper.

Remove it by lightly moistening paper with xylol. (correct)

What is the function of the coarse and fine adjustment controls in a compound microscope?

To increase or decrease the level of detail seen when looking at the slide or specimen through the eyepiece. Signup and view all the answers

What is a common source of illumination for compound microscopes?

Halogen bulbs Signup and view all the answers

What is the function of the nosepiece in a compound microscope?

It rotates to change which objective lens is active Signup and view all the answers

What is the purpose of the stage clips or mechanical stage on a compound microscope?

To hold the slide in place on the mechanical stage Signup and view all the answers

Which part of the compound microscope typically has a magnification between 5x and 30x?

Eyepiece (ocular lens) Signup and view all the answers

What is the function of the base in a compound microscope?

To house the illumination and support the compound microscope Signup and view all the answers

What is the purpose of the objective lenses in a compound microscope?

To magnify an item and produce a bigger picture Signup and view all the answers

Which type of cast is commonly seen in nephrotic syndrome?

Granular casts Signup and view all the answers

What condition is often associated with the appearance of yeast cells in urine?

Urinary Tract Infection (UTI) Signup and view all the answers

Which of the following is a common source of illumination for compound microscopes?

Mirror Signup and view all the answers

What is the most likely reason for the appearance of mucus in urine?

Urinary Tract Infection (UTI) Signup and view all the answers

Which parasite may be found in urine specimens?

Schistosoma haematobium Signup and view all the answers

What is the purpose of centrifuging urine at a low speed?

To produce a moderately cohesive button at the bottom of the tube Signup and view all the answers

Which condition can lead to the presence of abnormal numbers of red blood cells in urine?

Upper and lower urinary tract infections Signup and view all the answers

What do urinary casts indicate about their formation location in the nephron?

They are formed only in the distal convoluted tubule (DCT) or the collecting duct Signup and view all the answers

When would the presence of pus cells (white blood cells) in urine indicate an infection?

In either the upper or lower urinary tract infections Signup and view all the answers

What should be done after centrifuging urine and decanting the supernatant?

Suspend the sediment in the remaining supernatant by flicking the bottom of the tube Signup and view all the answers

Study Notes

Compound Microscope Components and Functions

The diaphragm controls the amount of light that enters the microscope.
The mirror is used to reflect light onto the specimen.
If oil becomes hardened on the lens, it should be carefully cleaned with a solvent and a soft cloth.
The coarse and fine adjustment controls are used to focus the image, with the coarse control used for initial focusing and the fine control used for precise adjustments.
A common source of illumination for compound microscopes is a light bulb or LED.
The nosepiece holds the objective lenses in place and allows for easy switching between them.
The stage clips or mechanical stage are used to secure the specimen slide and allow for precise movement.
The objective lenses typically have a magnification between 5x and 30x.
The base provides a stable foundation for the microscope.
The objective lenses are used to collect and focus light from the specimen, producing a magnified image.

Urinalysis

A common cast seen in nephrotic syndrome is a fatty cast.
The appearance of yeast cells in urine is often associated with a fungal infection.
A common source of illumination for compound microscopes is a light bulb or LED.
The most likely reason for the appearance of mucus in urine is the presence of a urinary tract infection.
The parasite Schistosoma may be found in urine specimens.
Centrifuging urine at a low speed is used to separate the urine into its different components.
The presence of abnormal numbers of red blood cells in urine can be indicative of glomerulonephritis.
Urinary casts indicate that they were formed in the nephron, specifically in the distal convoluted tubule or collecting duct.
The presence of pus cells (white blood cells) in urine indicates an infection if it is accompanied by other symptoms such as cloudy or foul-smelling urine.
After centrifuging urine and decanting the supernatant, the sediment should be resuspended and examined for any abnormalities.

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Description

Test your knowledge of the parts of a compound microscope with this quiz. Identify the different components such as the eyepiece, head, arm, and nosepiece.

Compound Microscope Parts Quiz