PHYSIOLOGY. OF THE. CARDIOVASCULAR. SYSTEM. KEY TERMS cardiac cycle cardiac output chemoreceptor reflex diastole electrocardiogram pacemaker . volumes in the vascular system; most adults have about 5 L of blood. Capillaries: The smallest-diameter blood vessels, which connect the smallest arterioles to. Cardiovascular Physiology. Case 1. Introduction. The Anatomy of the Cardiovascular System: The Heart. Cardiac Muscle: Cellular Level of Organization.
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PHYSIOLOGY OF CARDIOVASCULAR SYSTEM. Physiology of the Heart. Heart rate = 70/min, /day, 5 1/min, 4 l/day. Morphology of the heart. Introduction to Cardiovascular. Physiology Overview of the CV system. • Purposes. – Distribute Relationships among the vascular beds. • Flow is constant in. Human Anatomy & Physiology: Cardiovascular Physiology Ziser Lecture Notes, 1 ECG is a record of the electrical activity of the conducting system.
From molecules to organisms, everything must obey the laws of mechanics — Y. The primary function of the cardiovascular system is mass transport, that is, the transport of oxygen, carbon dioxide, nutrients, waste products, hormones, etc. This system consists primarily of the heart, which serves as the pump, the blood, which serves as the conducting medium, and the vasculature, which serves as the conduit through which the blood flows. Closely related systems are the cardio-pulmonary and reno-vascular systems. The primary organs of the pulmonary system are the lungs, which facilitate the exchange of oxygen and carbon dioxide between the blood and external environment, whereas the primary organs of the renal system are the kidneys, which serve as filters to remove waste products from the blood.
Cardiovascular Physiology Summary from Silverthorn, Human Physiology This page outlines information on the cardiovascular system. Separate pages describe the types and structures of arteries , characteristics of blood flow , and information on lipoproteins.
The human cardiovascular system is composed of a heart which pumps blood through a closed system of blood vessels. The heart is composed mostly of cardiac muscle, or myocardium.
Its primary function is to transport nutrients, water, gases, wastes, and chemical signals throughout the body. More information on the heart as a pump, blood flow and control of blood pressure, and components of blood will be discussed in related pages.
The cardiovascular system transports materials throughout the body: 1. Materials entering the body, such as oxygen via the lungs and nutrients and water via the intestinal tract, are carried to all cells. Materials moved from cell to cell intercellular communication including: a wastes products from some cell cells to the liver for processing; b immune cells that are present in the blood continuously for other cells, c hormones from endocrine cells to their target cells d stored nutrients from liver and adipose tissue to all cells.
Materials that are expelled from the body, such as metabolic wastes, heat, and carbon dioxide that are removed via the kidneys, skin, and lungs, respectively. As a general overview, the cardiovascular system is composed of the heart, the blood vessels or vasculature , and the cells and plasma of the blood.
Arteries are blood vessels that carry blood away from the heart and veins return the blood to the heart. A system of valves in the heart and veins ensures that the blood flows in one direction.
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