Describe the arrangement of cardiac muscle fibers.

Q: Describe the autonomic innervation of the heart.

A: The heart is innervated by sympathetic and parasympathetic fibres from the autonomic branch of the…

Q: describe arteries and veins with relation to heart

A: Arteries and veins are tube shaped vessels that carry blood in the body. The main difference between…

Q: Describe the process of Excitation–contraction coupling in cardiac muscle?

A: Excitation contraction is a process through which an action potential (electric stimulus) from the…

Q: Compare action potential of pacemaker and non-pacemaker (working) myocardial cells?

A: Cell can be defined as the basic membrane-bound unit which contains the fundamental molecules of…

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 the structural and functional characteristics of cardiac muscle tissue and the cardiac…

A: the structural and functional characteristics of cardiac muscle tissue:

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: Define blood flow and blood pressure

A: The circulatory system or the cardiovascular system is an organ system that causes the blood to…

Q: Define cardiac output, describe how it is regulated, and identify factors that affect it.

A: Cardiac muscle tissue can be defined as one of the three types of muscle tissue in our body. Cardiac…

Q: Describe the pacemaker potential and the myocardial action potential, and explain how the latter…

A: Heart is the major pumping organ in our circulatory system. It has two types of cells namely;…

Q: Explain the working of heart.

A: The heart is a muscular organ and is a structure associated with the cardiovascular system.

Q: explain how blood viscosityand blood vessel length each influence cardiac output?

A: Viscosity, a basal parameter in physics, is a crucial and important determinant of the shear stress…

Q: Discuss how the SA and AV nodes control the contractionsof the heart muscle, as well as how these…

A: A network of specialized muscle cells is present in the walls of the heart. These muscle cells are…

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: State some unique features of cardiac muscles.

A: Muscle is a soft tissue found in most animals. Muscles function to produce force and motion. There…

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: Explain the events in a cardiac cycle.

A: The cardiac cycle is referred to as one heartbeat that consists of one cycle of contraction and…

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: Describe the anatomy of movement of the wave of cell depolarization throughout the heart during the…

A: The cardiac cycle:It is comprised of a whole relaxation and contraction of both the atrium and…

Q: Describe the location and blood flow through thecoronary arteries and cardiac veins

A: The human heart is situated in the middle of the thoracic cavity in a space called the mediastinum.…

Q: Describe the cardiac cycle, and explain why heart valves open in onlyone direction.

A: Human heart is the Center for regulating blood across the body. It is made up of cardiac Muscles…

Q: Give description of blood supply in cardiac muscle?

A: Blood consists of a fluid medium called plasma in which the cells are suspended. Plasma transports…

Q: Describe cardiac output, including the factors involved in its regulation.

A: Our heart can likewise expand its stroke volume by pumping powerfully & expanding the amount of…

Q: Describe the path of blood through the cardiac circuits

A: Anatomy and physiology are the branches of biology, anatomy deals with the study of the structure of…

Q: Differentiate between a cardiac pacemaker and contractile cell?

A: In animals, the contraction of cardiac muscles begins by electrical impulses termed Action…

Q: Explain the intercellular structures of cardiac muscle.

A: Heart is a muscular organ that pumps blood throughout the circulatory system. It is situated between…

Q: Define cardiac output and given numerical values compute the cardiac output

A: Cardiac output is a term which describes the amount of blood being pumped by the heart through the…

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: Explain why the SA node normally paces the heart.

A: In human heart, small groups of specialised neuromuscular cells are present within the myocardium.…

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: If an individual had a disease that reduced the strength of cardiac muscle contraction, what aspect…

A: In vertebrates, cardiac muscle, also known as myocardium, is one of three major muscle groups found…

Q: Describe the histology of the cardiac muscle and how it differs from the skeletal muscle

A: The muscular system is a system of muscles where muscles are connected to bones and also to envelope…

Q: Explain the generation of cardiac action potential. Describe the cardiac conduction system and…

A: Introduction Cardiac action potential includes the changes in the membrane potential across the cell…

Q: Trace the flow of blood through the chambers and associated blood vessels of the heart.

A: The heart is a muscular organ which pumps blood through the blood vessels of the circulatory system.

Q: Explain in detail how the blood flows through the heart.

A: Heart is also known as Cardia It is the hollow muscular organ responsible for pumping the blood…

Q: Calculate heart rate by counting the number of Large ecG Squares

A: The number of times a heart beats in a unit of time is called heart rate. Usually, it is measured as…

Q: Define cardiac output, and explain how it is influenced by both heart rate and stroke volume.

A: The cardiac cycle is the human heart's performance from the beginning of one heartbeat to the…

Q: Define a cardiac cycle and the cardiac output.

A: Cardiac system or in clinical terms , the cardiovascular system is defined by the entire organ…

Q: State the location of cardiac muscles.

A: These muscle fibers have a single nucleus, are branched, and joined to one another by intercalated…

Q: Discuss

A: Introduction: Our heart is an amazing organ. It continuously pumps oxygen and nutrient-rich blood…

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…

Muscle Action

A change in the body or a bodily organ as a result of its functioning is referred to as an action. Muscle action can be defined as the specific movement of a bodily part generated by the contraction of a muscle. The muscle proteins actin and myosin are the important contractile proteins involved in muscle action. Muscle contraction, in addition to movement, serves several other important functions in the body, including posture, heat generation, and joint stability. Muscle contraction maintains posture, which includes standing and sitting.