What is a sarcolemma - Study guides, Class notes & Summaries

VTNE Practice Questions with 100% Verified Correct Answers What is a sarcolemma? A calcium storage unit in the muscle A contractile cell in the muscle Connective tissue putting muscle fibers into groups The cell membrane which encloses a muscle fiber - Correct Answer The cell membrane which encloses a muscle fiber ` You make a 1:5 dilution of a serum sample and measure the urea nitrogen. The analyzer reads that the concentration of urea nitrogen is 30 mg/dl. What is the urea n...

What is the synaptic knob? Swollen end of nerve fiber at each synapse. What is the first step of contraction? The enzyme ATPase hydrolyzes ATP, the energy released activates the head and "cocks" into a high energy position. Keeps ADP and phosphate group bound to it. Describe stability. Prevents unwanted movements, there are some muscles known as the antigravity muscles that fight against gravity that help us not fall over or slump. What important enzyme does the basal lamina...

ACSM CPT Exam Review Questions and Answers 100% AccurateACSM CPT Exam Review Questions and Answers 100% AccurateACSM CPT Exam Review Questions and Answers 100% Accurate 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. - ANSWER-Answer: D What is the fundamental unit of muscle contraction? A. Myofibril B. Sarcomere C. Myosin D...

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. - correct answer Answer: D What is the fundamental unit of muscle contraction? A. Myofibril B. Sarcomere C. Myosin D. Sarcolemma - correct answer Answer: B Which chamber of the heart is responsible for pumping oxygenated blood to the body? A. Right ventricle B. Left ventri...

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...

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...

Sarcolemma -Answer muscle plasma membrane Sarcoplasm -Answer cytoplasm of a muscle cell Muscle cells respond to neural, stretch, or other signals by changing their _______. -Answer sarcolemma electrical potential (voltage) The electrical potential change is coupled to intracellular changes that result in ______. -Answer force generation (contraction) Contractility -Answer active shortening of muscle cell and generation of tension (force) Extensibility -Answer passive s...

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 ...

Bio 161 Exam 4 Review with Complete Solutions What is another term for an individual muscle cell? - Answer: Muscle fiber Define fasicle in the context of muscle anatomy. - Answer: A cluster of muscle cells within the core of a muscle. Explain the function of the sarcolemma in skeletal muscle cells. - Answer: The sarcolemma serves as the outer membrane of skeletal muscle cells, maintaining cell integrity and regulating ion movement. Describe the sarcoplasm and its role wit...

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...