Sarcolemma - Study guides, Class notes & Summaries
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Kin 1A03 McMaster Final Exam Review (2023/2024) 100% Pass
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Kin 1A03 McMaster Final Exam Review (2023/2024) 100% Pass excitation-contraction coupling AP from NS turns into muscle contraction -MAP propagated along sarcolemma into t-tubules -Ca+ channels in SR open and release into sarcoplasm -Ca+ binds to troponin and tropomyosin detaches -X bridge forms 
myofibril entire muscles length - series of sarcomeres 
state of each of the bands when muscle is relaxed vs contracted A band (all of myosin) H zone - only myosin I band - only actin 
A band doesn't ch...
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BIOL 252 Exam 2 Practice Questions and Correct Answers
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Myocyte Muscle cell 
Sarcolemma Plasma membrane of myocyte 
Sarcoplasm Cytoplasm of myocyte 
Myofibril Tightly packed filament bundles found within skeletal muscle fibers. Contractional unit of a muscle cell. 
Sarcoplasmic reticulum Site of calcium storage in a muscle cell. Surrounds the myofibrils 
Transverse tubules (T-tubule) Inward extensions of the sarcolemma that dive into the muscle fiber and surround each myofibril to form a tunnel-like network within the muscle fiber 
Terminal cisternae...
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ACSM CPT Exam Review Questions 2023 with 100% correct answers
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ACSM CPT Exam Review Questions 2023 
 
 
What is the function of the tricuspid valve? 
A. It acts as a pacemaker. 
B. To pump blood through the heart. 
C. Prevents backflow of blood to the left atrium. 
D. Prevents backflow of blood to the right atrium. 
What is the fundamental unit of muscle contraction? 
A. Myofibril 
B. Sarcomere 
C. Myosin 
D. Sarcolemma 
Which chamber of the heart is responsible for pumping oxygenated blood to the body? 
A. Right ventricle 
B. Left ventricle 
C. Right atr...
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2024 NSCA-CSCS EXAM - TOP 100 PREP QUESTION WITH CORRECT DETAILED AND ANSWERS/100% VERIFIED
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2024 NSCA-CSCS EXAM - TOP 100 PREP QUESTION WITH CORRECT DETAILED AND ANSWERS/100% VERIFIED 
 
 
 
patella. - ANSWER: superior 
Which of the following is the smallest contractile unit of skeletal muscle? 
myosin epimysium sarcolemma 
sarcomere - ANSWER: sarcomere
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Anatomy and Physiology 232 Final Exam Questions And All Correct Answers.
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Three types of muscle in the human body are the following except: 
a. striated 
b. cardiac 
c. smooth 
d. celiac - Answer d. celiac 
 
The following are FUNCTIONAL characteristics of muscle except: 
a. heat production 
b. communication 
c. excitability 
d. extendability - Answer C. communication 
 
A muscle cell membrane is: 
a. a sarcolemma 
b. made of dense connective tissue 
c. larger the muscle organ itself 
d. non permeable - Answer a. a sarcolemma 
 
The 2 myofilaments in a myofi...
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BIO 264 FINAL EXAM 2024 WITH 100% CORRECT ANSWERS
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BIO 264 FINAL EXAM 2024 WITH 100% CORRECT ANSWERS 
 
 
Once excitation-contraction coupling has occurred, calcium ion concentration increases dramatically in the: 
 
a. sarcoplasmic reticulum 
b. cytosol of the muscle fiber 
c. sarcolemma 
d. terminal cisterna 
e. there is no change in calcium concentration - correct answer b. cytosol of the muscle fiber 
 
As Lisa drove home, she was suddenly alerted to the sound of a blaring horn and realized she had drifted off to sleep. Which nervous system ...
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ACSM CPT Review Exam Questions & Answers 2024/2025
- Exam (elaborations) • 51 pages • 2024
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ACSM CPT Review Exam Questions & Answers 2024/2025 
 
 
What is the function of the tricuspid valve? 
A. It acts as a pacemaker. 
B. To pump blood through the heart. 
C. Prevents backflow of blood to the left atrium. 
D. Prevents backflow of blood to the right atrium. - ANSWERSAnswer: D 
 
What is the fundamental unit of muscle contraction? 
A. Myofibril 
B. Sarcomere 
C. Myosin 
D. Sarcolemma - ANSWERSAnswer: B 
 
Which chamber of the heart is responsible for pumping oxygenated blood to the bod...
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Kin 292 Exam 4 || All Answers Are Correct 100%.
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What is the Muscle Cell? correct answers the muscle fiber 
 
Structure of a skeletal muscle correct answers a bundle of fibers 
 
- Epimysium 
- Perimysium 
- Endomysium 
- Fascicle 
-Sarcolemma 
- Muscle fibril 
- Myofibril 
 
Epimysium correct answers covers the entire skeletal muscle 
 
Perimysium correct answers surrounds fascicles 
 
Endomysium correct answers surrounds each muscle fiber 
 
Fascicle correct answers bundle of muscle fibers 
 
Sarcolemma correct answers Muscle's plasma membr...
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GMS 6474 Final Exam Questions and Answers Already Passed 100% Verified Graded A 2024
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what does the SR store - proteins and calcium 
 
what is the role of the transverse tubules in the muscle fiber - allow inside of muscle to communicate with the outside of the muscle 
 
how is a sarcomere measured - from z-disc to z-disc 
 
what is contained in the I band of the sarcomere & what color is the band - thin filaments 
titin 
z-disc 
light (isotropic) 
 
what is contained in the A band of the sarcomere & what color is the band - thick filaments 
thin filaments 
dark (scatters lig...
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Bio 264 Exam 3 Questions and Answers Already Passed
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Bio 264 Exam 3 Questions and Answers 
 
Already Passed 
 
What structure runs from Z line to Z line? Sarcomere 
 
The movement of the troponin-tropomyosin complex requires _______ Ca2+. 
 
The actin filament is a polymer formed from 300 to 400 globular subunits called ______ G- 
actin. 
 
A myofilament is the _________. Protein strand composed of actin or myosin 
 
T tubules ________. Conduct action potentials deep into the muscle cell 
 
A drug that interferes with the active transport of calci...
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