Dense bodies of smooth muscle are analogous to what in skeletal muscle?
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Dense bodies of smooth muscle are analogous to Z discs in skeletal muscle
What is a myofiber?
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A myofiber is a skeletal muscle cell
If you were microscopic and inside of a T-tubule, where would you technically be?
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You would technically be on the outside of the cell, since a T-tubule is an
extension of the sarcolemma
What is Myasthenia gravis?
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It is an autoimmune disease that results in the production of antibodies
against the nicotinic receptors
How is a tendon formed?
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It is formed when the perimysium and the epimysium converge
What is the sarcolemma?
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plasma membrane of a muscle cell
What are the two major proteins that make up the two major types of filaments?
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thin filaments are primarily made of actin
thick filaments are made of myosin
Where do action potentials first emerge?
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action potentials first emerge just outside the motor end plate in the
sarcolemma
How would you describe an A band, I band, H zone, Z line, M line, and zone of
overlap in a compressed or contracted sarcomere?
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the A band wont change in length. The I bands will get shorter. H zone will
get shorter. Z lines will move closer together. zone of overlap will get
longer
What are the three phases of a twitch contraction, can you describe everything that
occurs during each phase?
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The three phases of a twitch contraction are:
1. latent phase, which is the time between the stimulus and the contraction
2. the contraction phase, which is cross-bridge cycling, 3. the relaxation
, phase, which is when the cross-bridges are broken as calcium is removed
from the sarcoplasm.
Using what you know about internal and external tension, can you sequentially
describe how tension is transferred from the sarcomere to the load?
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Transfer occurs in the following sequence: myofibrils or sarcomeres to
extracellular fibers to tendon to the load
If you were not "born an elite endurance cyclist", can you ever become one? If so,
how? If not, why?
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Yes, by training to convert fast-twitch fibers into intermediate fibers.
What is the resting membrane potential of a typical skeletal muscle cell?
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The resting membrane potential of a typical skeletal muscle is -85 millivolts
How many I bands are present in one sarcomere?
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Give this one a try later!
Dense bodies of smooth muscle are analogous to Z discs in skeletal muscle
What is a myofiber?
Give this one a try later!
A myofiber is a skeletal muscle cell
If you were microscopic and inside of a T-tubule, where would you technically be?
,Give this one a try later!
You would technically be on the outside of the cell, since a T-tubule is an
extension of the sarcolemma
What is Myasthenia gravis?
Give this one a try later!
It is an autoimmune disease that results in the production of antibodies
against the nicotinic receptors
How is a tendon formed?
Give this one a try later!
It is formed when the perimysium and the epimysium converge
What is the sarcolemma?
Give this one a try later!
plasma membrane of a muscle cell
What are the two major proteins that make up the two major types of filaments?
,Give this one a try later!
thin filaments are primarily made of actin
thick filaments are made of myosin
Where do action potentials first emerge?
Give this one a try later!
action potentials first emerge just outside the motor end plate in the
sarcolemma
How would you describe an A band, I band, H zone, Z line, M line, and zone of
overlap in a compressed or contracted sarcomere?
Give this one a try later!
the A band wont change in length. The I bands will get shorter. H zone will
get shorter. Z lines will move closer together. zone of overlap will get
longer
What are the three phases of a twitch contraction, can you describe everything that
occurs during each phase?
Give this one a try later!
The three phases of a twitch contraction are:
1. latent phase, which is the time between the stimulus and the contraction
2. the contraction phase, which is cross-bridge cycling, 3. the relaxation
, phase, which is when the cross-bridges are broken as calcium is removed
from the sarcoplasm.
Using what you know about internal and external tension, can you sequentially
describe how tension is transferred from the sarcomere to the load?
Give this one a try later!
Transfer occurs in the following sequence: myofibrils or sarcomeres to
extracellular fibers to tendon to the load
If you were not "born an elite endurance cyclist", can you ever become one? If so,
how? If not, why?
Give this one a try later!
Yes, by training to convert fast-twitch fibers into intermediate fibers.
What is the resting membrane potential of a typical skeletal muscle cell?
Give this one a try later!
The resting membrane potential of a typical skeletal muscle is -85 millivolts
How many I bands are present in one sarcomere?
Give this one a try later!
