Column I Column II Ca binds to calmodulin 1. Elastic fibers that anchor thick filaments in place Ca binds to troponin 2. Occurs in smooth muscles only Oxidative type I muscle fibers 3. Is the primary source of Ca that drives muscle contraction
Q: I1. Electrical impulses in muscle fibers are called 12. Groups of muscle fibers are that are…
A: The movement of skeleton muscles is voluntary in nature and regulated by central nervous system.…
Q: true or false 6. Muscle cells are mesenchymal in origin. 7. Myomesin binds to titin molecules and…
A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…
Q: 1. A motor unit is a functional unit formed by a neuron and all the muscle fibres it innervates. II.…
A: The spinal cord is the place where motor neurons are located. It is the site of interneurons and…
Q: Ans Column I Column II Ca binds to calmodulin 1. Binds calcium in skeletal muscle cells Ca binds to…
A: Muscles are soft tissues present in most animals. They contain protein filaments called actin and…
Q: Identify the cells and cell components shown in Figure on prepared slides (skeletal muscle,…
A: 1] Skeletal muscle cell is a type of striated muscle cell and is a component of the muscle which…
Q: Which of the following cells have multiple processes extending from the soma? Multiple Choice…
A: Huamns have different cells and cell type which make different tissues .
Q: Choose ONE disorder: clostridium botulinum, rigor mortis, tetanus. Describe the step of muscle…
A: Answer:- Tetanus:- Clostridium tetani is a bacterial species that causes this disease. It releases…
Q: Slow twitch (sometimes called type I) muscle is the main muscle tissue used during endurance…
A: Muscle fibres of various types can be found in most of the body's muscles. However, some muscles…
Q: Tetanus is a disease caused by Clostridium tetani characterized by muscle spasms. Just like the…
A: Both Clostridium tetani and Clostridium botulinum are gram positive, anaerobic, non- motile and…
Q: What cellular changes could cause the skeletal muscle to become rigid?
A: Skeletal muscle cells do not relax or remain in a rigid state due to lack of ATP and so muscle…
Q: 34- Which of the following sentences is incorrect: a- Muscle fibers and neurons are similar because…
A: there needs a correction in question part. it is saltatory conduction.
Q: Ans Column I Column II Ca binds to calmodulin 1. Elastic fibers that anchor thick filanments in…
A: Muscle is a soft tissue found in animals which consists of actin and myosin that slides over each…
Q: Column I Column II Ca binds to calmodulin 1. Elastic fibers that anchor thick…
A: COLUMN-I COLUMN-II 1 Z line Elastic fibers that anchor thick filaments in place 2 actin and…
Q: 5. Cardiac muscle cells have the unique ability to demonstrate ________. A. graded strength B.…
A: The heart is a muscular organ liable for maintenance of blood flow. It achieves that work by its…
Q: Multinucleated smooth muscle results from the fusion of embryonic mesenchymal cells called myoblasts…
A: Although the human body is a singular entity, it is composed of billions of smaller entities of the…
Q: Muscle contraction incorrect order Calcium allows myosin to bind to the actin. A message travels…
A: Note: the question is attempted to write the correct order of muscle contraction. Muscle is the…
Q: Polio is a muscle-paralyzing disease caused by infection with poliovirus. This virus, however, never…
A: Ans: Polio virus: It is the causative agent of polio a paralytic disease. It belongs to Enterovirus…
Q: 8. Which muscle fiber type is always recruited first? A)Type IIa B)Type IIb C)Type I or type IIa,…
A: Motor unit recruitment depends on the force/resistance of the exercise. It is generally accepted…
Q: Fill in the blank: The P wave corresponds to depolarization of the muscle fibers of the…
A: A human heart is 4 chambered mascular organ. Its present inside chest and its similar to a fist in…
Q: QUESTION 6 Identify the specific kind of muscle in the image. cardiac muscle smooth muscle O…
A: Introduction Muscle fibers are made up of single muscle cells. They help to maintain physical forces…
Q: differentiate the dihydropyridine receptor from ryanodine receptor.
A: Di-hydropyridine receptor-
Q: Fast-twitch muscle fibers are also called type ________fibers and slow-twitch are called type…
A: There are two types of skeletal muscle fibers - fast twitch and slow twitch. Fast twitch muscles…
Q: Calcium channel blockers are used to treat hypertension since: 1) calcium helps muscle cells relax…
A: Calcium channel blockers are used as medications to treat hypertension as they lower blood pressure.…
Q: The smooth muscle tissue is consists of long muscle fibers Called visceral muscle Its cells have…
A: Muscles are the soft tissues that produce force and motion in animals. They are made up of protein…
Q: Contractile muscle cells cannot be created in culture. True False
A: Contractile muscle cell present in body as a skeletal muscle, smooth muscle and heart muscles. The…
Q: Lactic acid contributes to muscle fatigue because it affects: a) the enzyme that activates myosin.…
A: Glycogen is the stored form of glucose found in muscles , which is used to synthesize ATP( energy)…
Q: Thirty minutes after Mary has completed a 25-km race, she begins to notice severe muscle soreness…
A: Clinical test is used by the clinician for the several purposes including diagnosis of disease or…
Q: Summed twitches create a greater amount of tension in skeletal muscle cells because NOTE: select all…
A: A muscle twitch is a condition in which the muscles in our body involuntary contracts that are…
Q: Which of the following muscle types and characteristic is correctly matched? Group of answer choices…
A: Muscle is a soft tissue and composed of a group of muscle fibers. The characteristics of muscles…
Q: The cells are voluntary 21. Label the following terms on Figure below: Perimysium, Fascicle, Muscle…
A: Muscles are mesodermal in origin. They have in movement of body.
Q: Acetylcholinesterase is an important molecule in the engine end plate to share: a) stimulates…
A: Introduction: Acetylcholinesterase is primary cholinesterase in body. It is also known as AChE or…
Q: Acetylcholinesterase is the enzyme that breaks down and inactivates acetylcholine. Some nerve gases…
A: Nerve gas binds to acetylcholinesterase enzyme but only at 1 site. Nerve gas has a phosphorus group…
Q: differences between Type I and Type II muscle fiber
A: The muscles aids in controlling the physical forces inside the body. When the muscles are grouped…
Q: Involuntary muscle consisting of spindly shaped cells without striations is called: cardiac muscle.…
A: Involuntary muscles are those that do not move or contract under a person's conscious control, i.e.,…
Q: Striations are found in the cytoplasm of which type(s) of muscle tissue? Select all that apply.…
A: Muscle tissue- This tissue is a crucial part of any movement that the body comprises via…
Q: What is the cause of the fused/complete tetanus (4) in the figure below? * Average tension…
A: ANSWER;- At higher stimulus frequencies, there is no relaxation at all between stimuli. Explain;-…
Q: Necrotizing fasciitis is a serious bacterial infection. Necrosis is the death of tissues in the…
A: The death of tissues of the body is termed as necrosis. It occurs when the supply of blood to body…
Q: In the image above, the elongated dark (heterochromatic) nuclei represent A Satellite cells B…
A: Nuclei A nuclei is a double membranous structure that contains chromosomes of the cell.
Q: Fill in the blank: The T wave corresponds to repolarization of the muscle fibers of the…
A: Step 1 Repolarization takes place when the membrane potential returns to a negative value.…
Q: What effect does increasing the frequency of action potentials in a skeletal-muscle fiber have upon…
A: Skeletal muscles -- are the muscle which are in our voulantry control These are attached to the…
Q: Choose the correct option. Striated muscle fibres associated with myocardium: 1.Do not need calcium…
A: Cardiac muscle or striated muscle present in heart of vertebrates, also known as myocardium, is one…
Q: Of the below, could you please assist with what applies to Muscle tone? is a condition in…
A: Muscle tone - Muscle tone is a kind of continuous or partial contraction of muscles. Muscle tone…
Q: statements. 1. Muscle twitch is caused by ____ 2. The 3 phases of muscle twitch are ____ 3. Fast…
A: 1. Muscle twitch is caused by tightening of muscles involuntarily or contracting involuntarily. 2.3…
Q: Matching between Column I and corresponding definition or function in column II ( please answer all…
A: Muscles are soft tissues present in most of the animals. They play an important role in the motion…
Q: Choose the incorrect statement about skeletal muscle. Question 3 options: Skeletal muscle is…
A: Skeletal muscles account for 30 to 40% of total body mass. They are the muscles that connect to your…
Q: PLEASEEEEE CREATE A DIAGRAM A DIAGRAM DRAW A DIAGRAM TO OUTLINE THE MUSCLE CONTRACTIONS STARTING…
A: The muscular system consists of skeletal muscle, cardiac muscle and smooth muscle. The muscular…
Q: Binds calcium in skeletal muscle cells Occurs in smooth muscles only 1. 2. Is the primary source of…
A: Muscle is a soft tissue found in animals which consists of actin and myosin that slides over each…
Q: Cancellous bone (trabecular) is spongy bone White fibers make up fast-twitch muscle Muscle spindle…
A: In human body, there are various parts, glands, hormones, fibres, neurons, bones which help the in…
Q: Discuss the similarities and differences by which Ca2+ activity is involved in initiating muscle…
A: "Muscles" perform various functions as movement, which is the fundamental purpose of muscles is to…
The muscular system is a system of muscles of all kinds- skeletal, smooth and cardiac. These muscles help in maintaining body posture, enable movement and also protect us against foreign material.
Step by step
Solved in 2 steps
- After death, a person no longer makes ATP, so calcium stored in the sarcoplasmic reticulum diffuses down its concentration gradient into the muscle cytoplasm. This result is rigor mortis----an unbreakable state of muscle contraction that stiffens the body for a few days until muscles begin to decay. Explain why this contraction occurs.Ans Column I Column II Ca binds to calmodulin 1. Elastic fibers that anchor thick filaments in place Ca binds to troponin 2. Occurs in smooth muscles only Oxidative type I muscle fibers 3. Is the primary source of Ca that drives muscle contraction Titin 4. Is a dense connective tissue that surrounds the entire muscle H zone 5. Anchors thin filaments together Z line 6. Have high concentration of mitochondria Sarcomere 7. The region of thick filaments that has no overlap with thin filaments Actin and myosin 8. Is the functional unit of skeletal muscle Epimysium 9. Occurs in skeletal and cardiac muscles Sarcoplasmic reticulum 10. Generate the mechanical force of a muscle through crossbridge cycling Matching between Column I and corresponding definition or function in column II ?Ans Column I Column II Ca binds to calmodulin 1. Elastic fibers that anchor thick filanments in place Ca binds to troponin 2. Occurs in smooth muscles only Oxidative type I muscle fibers 3. Is the primary source of Ca that drives muscle contraction Titin 4. Is a dense connective tissue that surrounds the entire muscle H zone 5. Anchors thin filaments together Z line 6. Have high concentration of mitochondria Sarcomere 7. The region of thick filaments that has no overlap with thin filaments Actin and myosin 8. Is the functional unit of skeletal muscle Epimysium 9. Occurs in skeletal and cardiac muscles Sarcoplasmic reticulum 10. Generate the mechanical force of a muscle through crossbridge cycling
- Write note on the circled events of the excitation contraction coupling shown in the diagram below. Sarcolemma T-tubule Myosin Ca++ 4 Ca Cat 3 TN-I 2 TN-C -TN-T SR DHP receptor Actin TM SERCA RyR RK '17Calcium binding to calmodulin causes phosphorylation of what protein in what type of muscle? I Otroponin in skeletal and cardiac muscle only troponin in smooth muscle only actin in cardiac and smooth muscle actin in smooth muscle only myosin in smooth muscle onlyChapter 13, Level 2: Which of the following is true of a muscle spindle? O it is a region where sensory and motor neurons synapse in a monosynaptic reflex arc O it is a structure within a skeletal muscle that can monitor the stretch and position of that skeletal muscle O it is the portion of a skeletal muscle that antagonizes the contraction of that skeletal muscle O it is the structure that connects a skeletal muscle to a bone
- The endplate potential decreases with distance because too spread Na* channels the muscle membrane is too thin the leakiness of the muscle fiber the accumulation of voltage-gated channels none of the aboveSelect ALL that could cause muscle cramping (a sustained muscle contraction) in skeletal muscle: OHyperexcitability of somatic motor neurons (secreting too much Ach) Botulism poisoning, which prevents Ach secretion from somatic motor neurons O Myasthenia Gravis, in which antibodies block Ach receptors at the motor end plate, preventing Ach from binding O Hypocalcemia, in which the calcium pumps of the sarcoplasmic reticulum are unable to keep Ca2+ inside the SR (allowing Ca2+ to leak into the cytoplasm)In the given below option what step causes a sarcomere to shorten? cross-bridge formation calcium transport into SR calcium release power stroke myosin heads in high energy state
- During sarcomere shortening myosin gets shorter actin gets shorter A-band gets shorter • H-zone gets shorter more than one of the above is correctThe relaxation of skeletal muscle relies on the activity of the _ which decreases cytoplasmic calcium ion concentration. acetylcholine receptor Ca2+ -ATPase pump ryanodine receptor Na*/K* ATPase pumpArrange the steps of muscle innervation and contraction in response to touching a hot plate. appendage is removed from stimulus v movement is produced muslce fibers work together to produce action muscle contraction occurs and the sarcomere shortens Myosin heads bind thin filament Calcium binds troponin Calcium is released T tubules carry the action potential to the sarcoplasmic reticulum Action potential is generated in the sarcolemma as a result of opened sodium channels The presynaptic cell releases acetylcholine Signal arrives at the neuromuscular junction Sensory receptors detect uncomfortable heat Afferent neurons carry impulse to the central nervous system Signal reaches the reflex arc in the central nervous system and is directed out through the anterior horn Signal travels through the motor units > |> > > |> > > > > > > > >
