Homework Answers
Answer:
3. D) Muscle fiber excitation at the neuromuscular juntion
Explanation: Muscle contraction is initiated when action potential reaches the neuromuscular junction and motor neurons excites the muscle fiber membrane leading to excitation of the muscle fiber which in turn causes contraction of the muscle fibers
4. A) Endomysium
Explanation: Endomysium surrounds the individual muscle fibers.
Perimysium surrounds the muscle fascicles.
Epimysium surrounds the whole muscles.
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3. Which of the following molecular events comes first, when we want to contract a skeletal...
SECTION 1: Structure of a Skeletal Muscle A. Layers of connective tissue separate a muscle into...
SECTION 1: Structure of a Skeletal Muscle A. Layers of connective tissue separate a muscle into compartments. The layer called endomy- sium surrounds each muscle cell. Muscle cells are then bundled into fascicles, which are sur- rounded by perimysium. The entire muscle is composed of many fascicles, and is surround- ed by epimysium. All layers merge together to form the tendon that attaches the muscle to a bone. An outermost layer of connective tissue called fascia binds adjacent muscles together...
Name Lab Partner 1. Part A Match the term with its correct description A. Sarcolemma B....
Name Lab Partner 1. Part A Match the term with its correct description A. Sarcolemma B. Sarcomere C. Sarcoplasm D. Sarcoplasmic reticulum E. Endomysium F. Perimysium G. Epimysium H. Fascicle 1. Tendon Attaches muscle to bone Component of thick filament Component of thin filament Cytoplasm of a muscle cell Functional unit of a myofibril Cell membrane of a muscle cell Bundle of muscle fibers Produces ATP for muscle contraction Connective tissue that surrounds an individual muscle fiber Connective tissue that...
236 UNIT 12 introduction to Muscularsstern MusceTissue 2. Match each of the following terms with its...
236 UNIT 12 introduction to Muscularsstern MusceTissue 2. Match each of the following terms with its description/function: transverse tubule l. connective tissue wrapping around a muscle fiber sarcoplasmic reticulum 2. organelle packed with myofilaments epimysium transverse tubule and its flanking terminalcisternae d. thin filament 4 invagination of the sarcolemma 5. connective tissue wrapping around fascicle myofibril 6. the region of sarcolemma across from the axon terminal f triad at the neuromuscular junction endomysium 7. consists of actin, troponin, and tropomyosin...
PART A: Assessments match the terms in column A with the definitions in column B. Place...
PART A: Assessments match the terms in column A with the definitions in column B. Place the letter of your choice in the space provided.12 Column A Column B a. Endomysium 1. Protein that comprises part of the thin filament with actin b. Epimysium 2. Cytoplasm of a muscle fiber c. Fascia d. Fascicle 3. Connective tissue located between adjacent muscles e. Myosin 4. Layer of connective tissue that separates a muscle into small bundles called f. Perimysium fascicles g....
Multiple choice questions-Tor tes scantron questios s In a sarcomere, cross-bridge formation occurs specifically in the...
Multiple choice questions-Tor tes scantron questios s In a sarcomere, cross-bridge formation occurs specifically in the 5. Skeletal muscle fibers are formed from embryonic cells calledwhich fuse together, making skeletal muscle cells multinucleated. 1. a. sarcomeres b. myofibrils c. myoblasts d. fascicles a. Z line. b. I band c. M line. d. H band e. zone of overlap. 6. Titin is a(n) a. elastic protein. b. thin filament protein. 2. A thin layer of connective tissue that surounds a muscle...
1. What channels or carriers are NOT found at the axon to the axon terminal? Select...
1. What channels or carriers are NOT found at the axon to the axon terminal? Select one: a. Na+ leaky channels b. Cl- gated channels c. Na+ gated channels d. Na+-K+ ATPase e. None of the above 2. What is TRUE about action potential in the neuron? There may be more than one answer. Select one or more: a. At resting membrane potential (-70mV), the inactivation gate of the Na+ channel is closed while the activation gate is opened. b....
2. Complete the following statements concerning smooth muscle characteristics by inserting the correct terms in the...
2. Complete the following statements concerning smooth muscle characteristics by inserting the correct terms in the answer blanks. Endomysium 1. Whereas skeletal muscle exhibits elaborate connective tissue coverings, smooth muscle has a scant connective tissue_(1) smooth muscle 2. which is secreted by the_(2)_cells. The most common variety of smooth muscle, called_(3) smooth muscle, is arranged in unitary 3. opposing layers in the walls of hollow organs. Most often, there are (4)_ such layers, one running_(5)__and the other running (6) 4....
1. According to the paper, what does lactate dehydrogenase (LDH) do and what does it allow...
1. According to the paper, what does lactate dehydrogenase
(LDH) do and what does it allow to happen within the myofiber? (5
points)
2. According to the paper, what is the major disadvantage of
relying on glycolysis during high-intensity exercise? (5
points)
3. Using Figure 1 in the paper, briefly describe the different
sources of ATP production at 50% versus 90% AND explain whether you
believe this depiction of ATP production applies to a Type IIX
myofiber in a human....
6. a correct order of events of a muscle contraction stars correct Which of the following (A-E) represents with the...
6. a correct order of events of a muscle contraction stars correct Which of the following (A-E) represents with the binding of ATP to the myosin head? (I point) 9. 1- () The myosin head binds to the actin filament to form a cross bridge myosin and actin separate (3) ATP is hydrolyzed to ADP and P (4) The power stroke is initiated A. 1, 2, 3,4 B. 2, 1. 4, 3 C. 3, 2, 1, 4 D. 2, 3,...
change pas channels in the volta t ive protein to change shape. This A of the...
change pas channels in the volta t ive protein to change shape. This A of the S l e terminal siste oplasmic reticum calcio p r eneule warcoplasm reticulum sodium ions m o nster transverse tubules sarcolemma: calcium ions Saroplasmic reticum: triadsarcolemma: calcium ions sons bind to This causes a change in shape and exposing C D E Calcium vesicle tylcholine action potential Sodium sarcolemma calcium on myosin heads Sodium sacoplasmic reticulum calcium ions actin 15. An attaches to exposed...
SECTION 1: Structure of a Skeletal Muscle A. Layers of connective tissue separate a muscle into compartments. The layer called endomy- sium surrounds each muscle cell. Muscle cells are then bundled into fascicles, which are sur- rounded by perimysium. The entire muscle is composed of many fascicles, and is surround- ed by epimysium. All layers merge together to form the tendon that attaches the muscle to a bone. An outermost layer of connective tissue called fascia binds adjacent muscles together...
Name Lab Partner 1. Part A Match the term with its correct description A. Sarcolemma B. Sarcomere C. Sarcoplasm D. Sarcoplasmic reticulum E. Endomysium F. Perimysium G. Epimysium H. Fascicle 1. Tendon Attaches muscle to bone Component of thick filament Component of thin filament Cytoplasm of a muscle cell Functional unit of a myofibril Cell membrane of a muscle cell Bundle of muscle fibers Produces ATP for muscle contraction Connective tissue that surrounds an individual muscle fiber Connective tissue that...
236 UNIT 12 introduction to Muscularsstern MusceTissue 2. Match each of the following terms with its description/function: transverse tubule l. connective tissue wrapping around a muscle fiber sarcoplasmic reticulum 2. organelle packed with myofilaments epimysium transverse tubule and its flanking terminalcisternae d. thin filament 4 invagination of the sarcolemma 5. connective tissue wrapping around fascicle myofibril 6. the region of sarcolemma across from the axon terminal f triad at the neuromuscular junction endomysium 7. consists of actin, troponin, and tropomyosin...
PART A: Assessments match the terms in column A with the definitions in column B. Place the letter of your choice in the space provided.12 Column A Column B a. Endomysium 1. Protein that comprises part of the thin filament with actin b. Epimysium 2. Cytoplasm of a muscle fiber c. Fascia d. Fascicle 3. Connective tissue located between adjacent muscles e. Myosin 4. Layer of connective tissue that separates a muscle into small bundles called f. Perimysium fascicles g....
Multiple choice questions-Tor tes scantron questios s In a sarcomere, cross-bridge formation occurs specifically in the 5. Skeletal muscle fibers are formed from embryonic cells calledwhich fuse together, making skeletal muscle cells multinucleated. 1. a. sarcomeres b. myofibrils c. myoblasts d. fascicles a. Z line. b. I band c. M line. d. H band e. zone of overlap. 6. Titin is a(n) a. elastic protein. b. thin filament protein. 2. A thin layer of connective tissue that surounds a muscle...
2. Complete the following statements concerning smooth muscle characteristics by inserting the correct terms in the answer blanks. Endomysium 1. Whereas skeletal muscle exhibits elaborate connective tissue coverings, smooth muscle has a scant connective tissue_(1) smooth muscle 2. which is secreted by the_(2)_cells. The most common variety of smooth muscle, called_(3) smooth muscle, is arranged in unitary 3. opposing layers in the walls of hollow organs. Most often, there are (4)_ such layers, one running_(5)__and the other running (6) 4....
1. According to the paper, what does lactate dehydrogenase
(LDH) do and what does it allow to happen within the myofiber? (5
points)
2. According to the paper, what is the major disadvantage of
relying on glycolysis during high-intensity exercise? (5
points)
3. Using Figure 1 in the paper, briefly describe the different
sources of ATP production at 50% versus 90% AND explain whether you
believe this depiction of ATP production applies to a Type IIX
myofiber in a human....
6. a correct order of events of a muscle contraction stars correct Which of the following (A-E) represents with the binding of ATP to the myosin head? (I point) 9. 1- () The myosin head binds to the actin filament to form a cross bridge myosin and actin separate (3) ATP is hydrolyzed to ADP and P (4) The power stroke is initiated A. 1, 2, 3,4 B. 2, 1. 4, 3 C. 3, 2, 1, 4 D. 2, 3,...
change pas channels in the volta t ive protein to change shape. This A of the S l e terminal siste oplasmic reticum calcio p r eneule warcoplasm reticulum sodium ions m o nster transverse tubules sarcolemma: calcium ions Saroplasmic reticum: triadsarcolemma: calcium ions sons bind to This causes a change in shape and exposing C D E Calcium vesicle tylcholine action potential Sodium sarcolemma calcium on myosin heads Sodium sacoplasmic reticulum calcium ions actin 15. An attaches to exposed...
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