Unlike skeletal muscle, cardiac muscle doesn’t undergo tetany. Explain how this is achieved and why is this necessary?

Q: A patient has tachycardia. Would you recommend a drug that prolongsor shortens the plateau of…

A: Tachycardia is a condition that makes our heart beat more than 100 times per minute. There are three…

Q: In what ways are autorhythmic fibers similar to and diff erent from contractile fibers?

A: Heart is a four chambered cardiovascular organ pumping blood throughout the body. The auricles and…

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: Describe how the autonomic release of noradrenaline onto vascular smooth muscle cells that…

A: The autonomic nervous system releases noradrenaline (also known as norepinephrine) into vascular…

Q: Briefly describe the events of excitation-contraction coupling in cardiac muscle cells.

A: Cardiac muscles are also called myocardium, which is a type of muscle in the body that is…

Q: explain the process of Ca2+ induced Ca2+ release in the myocardium. how does this process differ…

A: Calcium ions are stored in the sarcoplasmic reticulum found in the muscle cells. Which is similar to…

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: Explain in detail why the neurotransmitter acetylcholine has different effects in skeletal vs.…

A: Acetylcholine lie outside the CNS which transmits synapsis and at synapse, there are released some…

Q: Describe the structural and functional properties of cardiac muscle, and explain how it differs from…

A: Muscle is a soft tissue like structure which is primarily responsible for the movement in the body.…

Q: What are the basic structural features of cardiac muscle cells?

A: Cardiac muscle cells, also known are cardiomyocytes form a branched structure in the heart. The…

Q: Describe the main theories for the termination of calcium sparks in the cardiac muscle excitation…

A: The answer is well explained above

Q: How does the excitation-contraction coupling in skeletal muscles and in cardiac muscles differ?

A: Introduction: The excitation/ depolarization of the muscle fiber results in developing action…

Q: Contrast action potentials in ventricular muscle cells with SA node action potentials.

A: A fast, sudden, propagating and transitory change of the muscle and nerve cell's resting membrane…

Q: Why can we say that cardiac muscle contraction is graded?

A: Cardiac muscle contraction refers to the contraction occurring within the cardiac muscles of the…

Q: Draw a ventricular muscle cell action potential.

A: The heart is a four chambered structure that is responsible for pumping the blood into the arteries…

Q: If branch A is twice the length of branch B, what is true regarding the resistance in branch A…

A: The Poiseuille's law states that the flow of fluid is related to various factors including length…

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: You are supervising a student who is carrying out several experiments on an animal species that has…

A: Based on the description of the graph, the student has recorded the action potential and contraction…

Q: Explain why a patient with congestive heart failure may have difficulty in generating enough muscle…

A: The cardiovascular system in the human body functions to circulate the blood in the body. It is also…

Q: What effect does a pacemaker potential have on a smooth musclecell?

A: In human physiology, pacemaker potential can be described as the positive increase in voltage in the…

Q: List the steps of a cardiac muscle cell CONTRACTION. Compare this to a skeletal muscle cell…

A: Muscle cell contraction is a complex physiological process that enables muscles to generate force…

Q: How does digitalis result in an increased contractile force of cardiac muscle?

A: The muscular system consists of three types- Smooth muscle Skeletal muscle Cardiac muscle Cardiac…

Q: Explain why Purkinje fibers conduct action potentials morerapidly than other cardiac muscle cells

A: Purkinje fibers are components of the heart's advanced conduction system, which guarantees that an…

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: Why do the cardiac muscle cells demonstrate a UTORHYTHMICITY

A: Cardiac muscle cells are short in dimension when compared to the skeletal muscles with small…

Q: Discuss in details the unique structure  of  a  cardiac muscle  fiber

A: The heart is a smooth muscle organ that pumps blood throughout the body. Oxygenated blood collected…

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: Describe the conditions at the sarcolemma of cardiac muscle cells at rest.

A: They are connected by intercalated discs. These are striated fibres with a single nuclei. Sarcolemma…

Q: Make a table comparing contraction mechanisms of cardiac and skeletal muscle.

A: The human skeleton is the body's internal framework. It is made up of around 270 bones at birth,…

Q: Why does the cardiac muscle have a longer absolute refractory period compared to skeletal muscle?

A: A cardiac muscle is a specialized type of muscle that forms the musculature of the heart. Just like…

Q: For cardiac muscle action potentials, describe ionmovement during the depolarization, early…

A: The cardiac muscles or cardiac myocytes contract and relax more than 100,000 times a day without…