Quiz Muscles mammalian histology PDF

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Quiz Muscles mammalian histology 3309 UWO...

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Quiz 1.

What type of muscle tissue is this?

Answer:Skeletal muscle 2.

What is this region?

Answer:Muscle-Tendon junction

3.

What gives this muscle type its characteristic striated pattern?

Answer:Arrangement of thick (myosin) and thin (actin) filaments 4.

Identify the type of muscle.

Answer:Skeletal muscle

5.

What type of muscle tissue is this?

Answer:Cardiac muscle 6.

What is the function of this structure? What protein complexes mediate those functions>

Answer:Physical connection of the cells and rapid spread of excitation impulse via its high electrical conductance. Desmosomes mediate physical connections and gap junctions mediate spread of action potentials.

7.

Name the structure. Which neurotransmitter would you find here?

Answer:Neuromuscular junction. Acetylcholine. 8.

What type of muscle tissue is this?

Answer:Smooth muscle 9.

Both cardiac and skeletal muscle are striated. What other histological characteristics could you use to distinguish them under the light microscope? Answer:Skeletal muscle contains many nuclei that are located peripherally; cardiac muscle has just a few located more centrally.

10. Which histological landmarks of the sarcomere shrink when a muscle contracts? Answer:The I-band and the H-band decrease in size; the A-band remains the same....