Sarcoplasmic reticulum - Study guides, Class notes & Summaries
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CSCS Practice Exam; Questions & Answers 100% Solved
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CSCS Practice Exam; Questions & Answers 
100% Solved 
Each muscle fiber is surrounded by a connective tissue called? Answer-Endomysium 
What is released from the sarcoplasmic reticulum into the myofibril, causing tension 
development in a muscle? Answer-Calcium ions that bind to troponin 
What type of muscular contraction occurs in the pectoralis major during the slow, controlled, 
downward phase of a bench press? Answer-Eccentric
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CSCS Practice Exam 2024/2025
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CSCS Practice Exam 2024/2025 
 
 
Each muscle fiber is surrounded by a connective tissue called? - ANSWER Endomysium 
 
 
 
 
What is released from the sarcoplasmic reticulum into the myofibril, causing tension development in a muscle? - ANSWER Calcium ions that bind to troponin 
 
 
 
 
What type of muscular contraction occurs in the pectoralis major during the slow, controlled, d...
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USABO Latest Update with Verified Solutions
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USABO Latest Update with Verified 
 
Solutions 
 
Eukaryote An organism whose cells contain complex structures enclosed within membranes. 
The defining membrane bound structure thats sets them apart from prokaryotic cells is the 
nucleas or nuclear envelope within which the genetic material is carried. All species of large 
complex species are eukaryotes, including animals, plants and funghi. 
 
Euchromatin This shows as pale areas in the nucleas under electro magnification. It is a less 
densly...
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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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BPK 105 Exam Questions and Answers 2024/2025 | A+ GRADED 100% VERIFIED
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BPK 105 Exam Questions and Answers 2024/2025 | A+ GRADED 
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What is actin? Actin is a thin protein filament in muscle fibers that works with myosin for 
muscle contraction. 
What is myosin? Myosin is a thick protein filament in muscle fibers that interacts with actin 
to cause muscle contraction. 
What is a sarcomere? A sarcomere is the basic contracting unit in a muscle fiber, made of 
actin and myosin. 
What is troponin? Troponin is a protein on actin filaments; it binds calcium a...
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NSCA- CSCS EXAM REVIEW QUESTIONS AND ANSWERS, 100% ACCURATE. GRADED A+.| latest update 2024/25|
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NSCA- CSCS EXAM REVIEW QUESTIONS AND ANSWERS, 100% 
ACCURATE. GRADED A+. 
sliding filament theory 
theory that actin filaments slide toward each other during muscle contraction, while the myosin filaments 
are still 
Z line 
A dark thin protein band to which actin filaments are attached in a striated muscle fiber, marking the 
boundaries between adjacent sarcomeres. 
T tubules 
Also called transverse tubules, these are deep invaginations of the plasma membrane found in skeletal 
and cardiac m...
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BIOL 2213 Exam 3 Questions And Answers With Verified Solutions
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_____ is not striated - smooth muscle 
______ results as calcium is pumped into the s. reticulum when an AP stops - relaxation 
_______ shorten during contraction as thin filaments on sides of sarcomeres pulled toward middle - 
H bands 
__________ occurs at same time as QRS complex so it typically doesnt register - atrial 
repolarization 
2 sources of cystolic calcium that initiate smooth muscle contraction - sarcoplasmic reticulum, 
extracellular calcium 
3 main functions of cardiovascular syst...
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BIOS 252 Anatomy and Physiology II Exam Review| Complete Guide with Questions and Verified Answers (2024/ 2025 Update) -Chamberlain
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what connective tissue is best described as surrounding 10-100 muscle fibers seperating them into bundles known as fasicles? 
a- endomysium b-supramysium c-perimysium 
d-epimysium 
 
 
Answer: perimysium 
 
 
 
QUESTION 
The muscle fiber (cell) is an important part of the organization of muscle tissue in a skeletal muscle. The organization of muscle tissue from smallest to largest is? 
 
 
Answer: 
Filament, myofibril, fiber, fascicle, skeletal muscle 
 
 
 
QUESTION 
What is ...
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BIOS 252 Final Exam Practice test Questions With Correct Answers!!
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Which of the following is a recognized function of skeletal muscle? 
1) A) guard body entrances and exits 
B) maintain posture 
C) maintain body temperature 
D) produce movement 
E) all of the above - Answer-E 
Nerves and blood vessels that service the muscle fibers are located in the connective tissues of the 
A) myofibrils. 
B) sarcolemma. 
C) endomysium. 
D) sarcomere. 
E) perimysium. - Answer-E 
Which of the following best describes the term sarcoplasmic reticulum? 
A) largely made of myosin...
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BPK 105 Final Exam Questions with 100% Correct Answers | Updated 2024 | Guaranteed Success
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What is actin? Actin is a thin protein filament in muscle fibers that works with myosin 
for muscle contraction. 
What is myosin? Myosin is a thick protein filament in muscle fibers that interacts with 
actin to cause muscle contraction. 
What is a sarcomere? A sarcomere is the basic contracting unit in a muscle fiber, made 
of actin and myosin. 
What is troponin? Troponin is a protein on actin filaments; it binds calcium and helps 
start muscle contraction. 
What is the sarcoplasmic reticulum? ...
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