Blood flow distribution changes significantly with exertion. Where does blood flow primarily increase?

Q: Describe the effects of sympathetic neuron stimulation on cardiacmuscle during contraction and…

A: Contraction in cardiac muscle occurs with the help of the sliding filament model of contraction.…

Q: Define peripheral resistance (PR)

A: Peripheral resistance can be defined as the opposing force applied by the arteries on the blood…

Q: State how changes in body position (changing from standing to reclining or from reclining to…

A: The circulatory system is one of the major systems of the human body. The circulatory system…

Q: How are blood flow and the pressure gradient related? How are blood flow and resistance related?

A: Blood can be defined as the body fluid that is present in humans and other animals and it play the…

Q: What is the function of the smooth muscle in the arterial wall?

A: The arteries are the blood vessels that deliver oxygen-rich blood from the heart to the tissues of…

Q: Differentiate between Pressure and Resistance?

A: Blood flows through the blood vessels like arteries, veins and capillaries due to the pressure…

Q: Why do differences occur in maximal shortening velocities?

A: The shortening speed of a muscle fiber is that the rate of its shortening.

Q: Why does increasing EDV increase contractility?

A: The heart is a muscular organ in most animals, which pumps blood through the blood vessels of the…

Q: What are the normal quantities (in milliliters per liter) for each form in arterial blood?

A: the normal quantities (in milliliters per liter) for each form in arterial blood  are :

Q: splanchnic, cutaneous, and skeletal muscle vascular beds during sustained exercise (distance

A: The amount of blood pumped by the left ventricle in a minute is called as the cardiac output. It's…

Q: When Joe exercises, his cardiac output doubles.  Before exercise, his heart rate is 60 beats/min.…

A: Heart is an important organ which pumps oxygenated blood to different parts of the body.  Cardiac…

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: 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: What effect does hypocalcemia have on the contractile force developed by cardiac muscle?

A: Calcium plays an important role in the activity of muscles. It is released in the muscles from the…

Q: vasoconstrictors?

A: The pressure of circulating blood against the walls of blood arteries is known as blood pressure.…

Q: Define cardiac output.

A: The heart is a pump that beats 60 to 100 times per minute on average. The heart pumps blood…

Q: What is the relationship between cardiac output and venous return in the steady state?

A: Cardiac output is the amount of blood pumped into the aorta by the heart per minute, and it is…

Q: What is the force driving venous return?

A: * Veins are blood vessels which return blood to the heart. * The pressure in these veins is the…

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: Stroke Volume occurs during?

A: The heart is a muscular pumping organ that supplies blood to the entire body. It is made up of four…

Q: What is the most characteristic feature of a wandering pacemaker rhythm?

A: The Heart is a vital part of the body, it supplies the blood to the various body part, organs. It is…

Q: How do blood volume and venous tone affect cardiacoutput?

A: The heart pumps the blood, and the amount of blood that is pumped by it within one minute through…

Q: What happens to blood flow during exercise? What is functional sympatholysis?

A: Blood flow refers to the continuous movement of blood across a specific vessel in the cardiovascular…

Q: How does the cardiac contractile refractory period differ from a typical skeletal muscle refractory…

A: The muscle fibers are multi-nucleated (exclusively in the case of skeletal muscle fibers),…

Q: Which organs have an increased proportion of cardiac output during exercise? Which receive a…

A: Cardiac output is also called heart output. It describes the blood volume being pumped by the heart…

Q: When the smooth muscles of the muscular arteries dilate, what happens to (systemic) blood pressure?

A: Disclaimer: Because there were two questions, we've provided the answer to the first. If you need…

Q: Define syncytiotrophoblast

A: Cell is the fundamental membrane- bound unit that contains the basic particles of life and of which…