Study Guide 2

Question 1

Define the following histological terms of skeletal muscle: myofiber

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Question 2

Define the following histological terms of skeletal muscle: sarcolemma

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Question 3

Define the following histological terms of skeletal muscle: sarcoplasm

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Question 4

Define the following histological terms of skeletal muscle: nuclei

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Question 5

Define the following histological terms of skeletal muscle: mitochondria

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Question 6

Define the following histological terms of skeletal muscle: transverse tubules

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Question 7

Define the following histological terms of skeletal muscle: sarcoplasmic reticulum

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Question 8

Provide a description for the following: myofiber

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Question 9

Provide a description for the following: myofibril

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Question 10

Provide a description for the following: myofillament

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Question 11

Compare and contrast the two types of myofilaments (actin and myosin) regarding their composition, structure, size, and position within the muscle fiber.

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Question 12

Define Sarcomere:

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Question 13

Provide a definition of the following components of the sarcomere:
Z disc

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Question 14

Provide a definition of the following components of the sarcomere:
A band

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Question 15

Provide a definition of the following components of the sarcomere:
I band

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Question 16

Provide a definition of the following components of the sarcomere:
H zone

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Question 17

Provide a definition of the following components of the sarcomere:
M line

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Question 18

Provide a description of the sliding filament mechanism, being sure to describe how the sarcomeres shorten without the myofilaments changing their shape or size.

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Question 19

Provide a description of the function of the regulatory proteins (troponin and tropomyosin)

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Question 20

Provide brief overview of the function of calcium in its role in muscle contraction.

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Question 21

Define motor unit, be sure to include a description of an average number of muscle fibers in a motor unit.

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Question 22

Compare and contrast the motor units of muscles responsible for powerful gross movements versus the motor units for muscles controlling precise movements.

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Question 23

Provide a definition of the following components of the neuromuscular junction:
pre-synaptic neuron

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Question 24

Provide a definition of the following components of the neuromuscular junction:
synaptic end bulb

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Question 25

Provide a definition of the following components of the neuromuscular junction:
synaptic vesicles

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Question 26

Provide a definition of the following components of the neuromuscular junction:
synaptic cleft

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Question 27

Provide a definition of the following components of the neuromuscular junction:
motor end plate

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Question 28

Provide a definition of the following components of the neuromuscular junction:
acetylcholine

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Question 29

List the sequence of events occurring at the neuromuscular junction causing the production of a muscle action potential.

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