Which of the following is unique to cardiac musclecells?a. Only cardiac muscle contains a sarcoplasmicreticulum.b. Only cardiac muscle has gap junctions.c. Only cardiac muscle is capable ofautorhythmicityd. Only cardiac muscle has a high concentration ofmitochondria.
Q: Is Cardiac muscle the muscle of the heart? How does it function?
A: The Muscle is a soft tissue that contains actin and myosin protein filament that are responsible for…
Q: What is the difference between an endocrine and exocrine gland? Differences between cartilage and…
A: Introduction : Muscular tissue is a type of tissue that aids in muscle contraction. By exerting…
Q: A heart microslide demonstrates cells in the shape of pale chords, which have few myofibrilla,…
A: As per the guidelines, only one question will be solved here, please repost the other question…
Q: Explain the structure of cardiac muscle and how it helps produce coordinated contraction in each…
A: Cardiomyocytes or cardiac muscle cells form a highly branched cellular network in the heart. They…
Q: Parts of the fibrous skeleton sometimes become calcified in old age. How would you expect this to…
A: Heart is made of cardiac muscle. By contraction of this muscle blood will be pumped to the each…
Q: When cardiac muscle tissue dies in adults, it is replaced with scar tissue composed of dense…
A: When a person has a heart attack, the lack of oxygen causes part of the tissue to be damaged. The…
Q: What initiates action potentials in cardiac muscle?
A: Generation of action potential activates the neuron during the generation of stimuli. It is studied…
Q: The capillaries of skeletal muscles are of the structural type called _____
A: Muscles are required in breathing, talking, running, walking, and anybody movement. Actin and…
Q: The pressure in the veins sufficiently high to drive the flow of blood into the heart is callec O…
A: The heart is a fist-sized organ that pumps the blood throughout the body. It is the primary organ of…
Q: High pressure in the systemic and pulmonary circuits often results in ventricular enlarges to pump…
A: PULMONARY CIRCUIT The blood pumped by right ventricles enters into the pulmonary artery The left…
Q: Describe the types and significance of intercellular junctions between cardiac muscle cell?
A: Cardiac muscle helps to contract the heart. There are 3 types of intercellular junction between the…
Q: what is contraction in cardiac muscle cells in response to
A: Muscle cells are the cells also known as myocytes that help in the formation of muscle tissues. The…
Q: Describe cardiac muscle tissue and compare its structure and physiology to the other types?
A: Muscular tissue or muscle tissues are generally three types: Smooth muscle tissues Skeletal muscle…
Q: Compare the characteristics of skeletal and cardiacmuscle cell contractions.
A: Tissue comprises of structurally and functionally similar cells. It is a level of organization in…
Q: Describe the histology of cardiac muscle tissue, and differentiate ?it from that of skeletal muscle?
A: BASIC INFORMATION MUSCLE It is a type of soft tissue which are found in most of the animals. The…
Q: Why do the cardiac muscles cells demonstrateautorhythmicity?
A: Autorhythmicity is a property of specialized cardiac cells called pace maker cells that directly…
Q: Explain differences between action potentials of cardiac muscle cells and those in nodal cells of…
A: On the surface of the heart, muscle fibers are arranged to form a fused interconnected mass termed a…
Q: The pacemaker cardiac muscle cells rely on for their action potentials.
A: Cardiac muscles are found in the heart. They are auto excitable. Cardiac muscles are striated,…
Q: Describe the process of Contraction Coupling in the Cardiac Muscle?
A: Answer: Introduction: Cardiac muscle, comprised of the contractile cells of the heart, contain a…
Q: Describe the properties of the cardiac muscle, including automaticity, excitability, conductivity,…
A: Cardiac muscle or heart muscle is also known as myocardium. It is one of the three kinds of…
Q: What happens to systemic blood pressure when the smooth muscle of muscular atries contract?
A: Blood vessels : Blood capillaries are artery ,vein , capillaries are made by three layers - Tunica…
Q: How does excitation–contraction coupling in cardiac muscle resemble that of skeletal muscle? How is…
A: The calcium ions channels present in the plasma film are momentarily opened because of the…
Q: below. What can we learn from this experiment about the rhythmicity of our cardiac muscle? List…
A: Cardiac muscles are the specialised involuntary muscles observed around the heart and are…
Q: Describe the arrangement of cardiac muscle fibers.
A: BASIC INFORMATION MUSCLE It is a type of soft tissue which are found in most of the animals. The…
Q: Compare the structure and function of arteries and veins, and the significance of the skeletal…
A: The heart is the organ which plays an important role in the transport of blood and nutrients.the…
Q: Which of the following is an example of muscular arteries? O A. brachial O B. brachiocephalic OC.…
A: Muscular arteries are those arteries that take blood from the elastic arteries. They are, usually,…
Q: What are the two functional importances of the intercalated discs of cardiac muscle?
A: The intercalated discs are a specific feature of cardiac muscle fiber where it supports synchronized…
Q: A drug is found to partially inactivate fast sodium channels. Mow would this drug change the action…
A: Given: To find a drug that partially inactivate fast sodium channels. How it change the action…
Q: Describe the structure of intercalated discs in cardiac musclecells, and briefly discuss their…
A: Cardiac muscle tissues are tissues of the heart and help to provide strength and flexibility from…
Q: A heart beats 72 times per minute with a total of 10mL of blood pumped with each contraction. What…
A: Cardiac output is the amount of blood pumped each minute by the heart. It is calculated by…
Q: a. When part of the heart muscle dies, how does itheal?b. How would the new tissue affect the…
A: The heart is a vital organ for survival, as it pumps blood throughout the body. The heart is made up…
Q: Discuss the importance of smooth muscle cells present in the aorta and all arteries.
A: Smooth muscle is employed in vessels to control blood pressure and flow in the cardiovascular…
Q: Where are cardiac muscle cells found in the heart? O myocardium O pericardium O endocardium O great…
A: The heart is the main organ of the circulatory system of the body. It is located behind the…
Q: Which component of the heart conduction systemwould have the slowest rate of firing?a.…
A: Step 1 A cardiac conduction system is an array of functional and specialized cardiac muscle cells,…
Q: Discuss that Can cardiac muscle exhibits (normally or under experimental conditions) summation or…
A: Cardiac muscles are defined as the group of involuntary muscles present in the heart. These muscles…
Q: Cardiac myocytes are mechanically connected via O Gap junctions O Autorhythmic cells O Purkinje…
A: Cardiomyocytes: The cells responsible for generating contractile force in the intact…
Q: Closer to the heart, arteries would be expected to have ahigher percentage of ________. a.…
A: Vascular system can be divided into two segments, pulmonary vascular system, and systemic vascular…
Q: What are three anatomic or physiologic differences between skeletal muscle and cardiac muscle?
A: The biological level of the organization is a hierarchy in which the living thing and structures are…
Q: Cardiac muscles differ from skeletal muscles in that they ________.
A: Cardiac muscles are different from skeletal muscles in different aspects, cardiac muscles are…
Q: Cardiac muscles differ from skeletal muscles in that they
A: We know that cardiac muscles are involuntary muscles whereas skeletal is voluntary which requires…
Q: During exercise, activation of alpha-adrenergic receptors in skeletal muscle arterioles: A)is…
A: *There are three types of adrenergic receptors are present alpha beta-1 beta-2 *Alpha receptors…
Q: plain in details contraction of the heart on cellular level by describing the contraction of an…
A: Myoglobin, a pigment found in great concentrations in heart muscle, is also present. In that, it…
Q: In which direction does Ca2+ move in response to the opening of voltage-gated Ca2+ channels: into or…
A: Voltage-gated ion channels are a type of transmembrane protein that forms ion channels that are…
Q: What is the significance of the extended refractory period in cardiac muscle?
A: Cardiac muscle contraction is a type of electrical event that begins at the sinoatrial node. As a…
Q: describe why arteries that are no longer stretchy can cause the heart muscle to wear out and fail *…
A: Blood vessels carries the blood throughout the body. The blood vessel that carries oxygenated blood…
Which of the following is unique to cardiac muscle
cells?
a. Only cardiac muscle contains a sarcoplasmic
reticulum.
b. Only cardiac muscle has gap junctions.
c. Only cardiac muscle is capable of
autorhythmicity
d. Only cardiac muscle has a high concentration of
mitochondria.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
- A significant structural feature in the microscopic studyof cardiac muscle cells is the presence of gap junctionsbetween neighboring cells. Why are these junctions soimportant?Cardiac muscle cells differ from skeletal muscle cells because: a. They can respond to neurotransmitters.b. They are striated.c. They contain intercalated discs and gap junctions.d. They require calcium for contraction.Which of the following is true of cardiac muscle? о а. Cardiac cells are electrically connected via intercalated disks o b. All of these statements are true It is the only type of tissue that produces spontaneous action potentials o d. It is made of multinucleate cells It lacks sarcoplasmic reticulum Ос. Ое.
- The action potential of skeletal muscle A. is not essential for contraction. B. is longer than the action potential of cardiac muscle. C. has a prolonged plateau phase. D. causes the immediate uptake of calcium ions into the lateral sacs of the sarcoplasmic reticulum. E. spreads inward to all parts of the muscle via the T tubules.At that time balloon angioplasty was carried out and a stent placed inside his left anterior descending artery. Leo then spent several days in the cardiac intensive care unit followed by time in a rehab unit to complete his recovery. What long term effects might an MI have on Leo’s heart muscle tissue?Explain the role of tropomyosin in the muscle contraction process? How are the intercalated discs involved in the contraction of cardiac muscles?
- Which of the following statements is false?a. Slow fibers have a small network of capillaries.b. Slow fibers contain the pigment myoglobin.c. Slow fibers contain a large number of mitochondria.d. Slow fibers contract for extended periods.Why is the latent period longer during an isotonic twitch of a skeletalmuscle fiber than it is during an isometric twitch?a. Excitation–contraction coupling is slower during an isotonic twitch.b. Action potentials propagate more slowly when the fiber is shortening,so extra time is required to activate the entire fiber.c. In addition to the time for excitation-contraction coupling, it takesextra time for enough cross-bridges to attach to make the tension in themuscle fiber greater than the load.d. Fatigue sets in much more quickly during isotonic contractions, andwhen muscles are fatigued the cross-bridges move much more slowly.e. The latent period is longer because isotonic twitches only occur in slow(type I) muscle fibers.A. Neuromuscular junction ere a nerve cell contacts a muscle cell relaying a signal to contract in the form of an action potential is В. C. Motor end plate Axon terminals D. Sarcolemma 36-Primary cilia present in endothelial cells, they exhibit a major role in the production of a potent vasodilator that is A. NO gas B Smooth muscles surrounding blood vessels C. Skeletal muscles surrounding veins D. 9+0 structure 37-In the structure of microtubules doublets in the axoneme, all the tubules contain. wall in which ............ is a major component. A. Dynein arm, tektin B. Tubulin, tektin and they share a C. Tektin, Dynein arm D. Nexin connection, interdoublet link 38-The best-studied type of myosin motor protein is A. Myosin II It has two heavy chains with four light chains. B. Myosin V C. Myosin VI D. Myosin X 39-During cell crawling, the formation of a protrusion at the front of the cell is necessary for a cell to move forward. Two types of protrusions depending on actin dynamics. A…
- Cardiac muscle hasa. sarcomeres. d. many mitochondria.b. a sarcoplasmic reticulum. e. All of these are correct.c. transverse tubules.Why is cardiac muscle tissue that has been damaged by injury or disease incapable of regeneration?Cardiomyocytes are similar to skeletal muscle because: a. they beat involuntarily b. they are used for weight lifting c. they pulse rhythmically d. they are striated