Cardiovascular Lab 8

Topics: Heart, Blood, Blood pressure Pages: 5 (1384 words) Published: November 13, 2013

Experiment #8: Cardiovascular System: Heart Sounds, Palpitating, Pulse, Blood Pressure, Venous Pressure Week #: 8 (Dry Lab)

DEFINITIONS:

1. SYSTOLE: CONTRACTION OF THE HEART CHAMBERS DURING WHICH BLOOD LEAVES THE CHAMBERS; USUALLY REFERS TO VENTRICULAR CONTRACTION 2. DIASTOLE: RELAXATION OF THE HEART CHAMBERS, DURING WHICH THEY FILL WITH BLOOD; USUALLY REFERS TO VENTRICULAR RELAXATION 3. CARDIAC CYCLE: COMPLETE ROUND OF CARDIAC SYSTOLE AND DIASTOLE 4. VENTRICULAR SYSTOLE: WHEN ARE THE AV VALVES CLOSED?

5. VENTRICULAR PRESSURE: EVENT WITHIN THE HEART CAUSES AV VALVES TO OPEN 6. SOUNDS OF KAROTKOFF: SOUNDS YOU LISTEN FOR WHEN TAKING BLOOD PRESSURE “LUB DUP” 7. PULSE PRESSURE: DIASTOLIC – SYSTOLIC PRESSURE

8. PULSE: HEART BEAT IN A MINUTE
9. BLOOD PRESSURE: THE PRESSURE OF BLOOD AGAINST THE WALLS OF ANY BLOOD VESSEL 10. PULSE DEFICIT: DIFFERENCE BETWEEN THE HEART RATE AND THE PALPABLE PULSE

Introduction:
Cardiovascular system means the system of heart and blood vessels of human body. The term “cardiovascular” is a combination of two word; “Cardio” and “vascular”. The term “cardio” is derived from “cardiac” meaning Heart and the term “vascular” means blood vessels. So the name itself indicates that cardiovascular systems is the system of heart and blood vessels. Cardiovascular system is also known as “Circulatory System”. Cardiovascular system is made up of three major components; Heart, Blood vessels and blood. The heart is a hollow muscular organ made of strong cardiac muscles. The heart can push the blood through the circulatory system with great force. In fact push of the heart is the major force that causes circulation of blood throughout human body. Heart is made up of three layers; Pericardium, Myocardium and Endocardium. Human beings, unlike other some other species, have a closed circulatory system which essentially means that blood does not come into direct contact with body tissues. Rather, the blood flows in restricted pathways called blood vessels. These vessels which can be to the heart (veins), away from the heart (arteries), are pivotal in the distribution of oxygenated blood throughout the body. Blood is a specialized tissue of body that exists in fluid form. It is one of the five basic types of tissues of human body. Blood consists of two major portions: Blood cells and Plasma. Plasma is the watery portion of blood that makes it a fluid. 90% of blood plasma is water and remaining 10% are proteins, inclusions and waste products etc. Blood cells are of three main types: Red Blood Cells (RBCs), White Blood Cells (WBCs) and Platelets. Perfectly functioning Cardiovascular system is so important for human body, that if it stops for a minute, rapid death will occur. The flow of blood is necessary for existence of life. If the flow of blood is stopped, life will stop. Heart is the main organ of cardiovascular system and it is responsible for distributing blood all over human body. Heart diseases are categorized as the “leading cause of death” in United states. It is obviously important to maintain as healthy a heart as possible. Blood pressure is one test in which doctors can measure potential harmful health implications regarding one’s heart. Blood pressure measuring involves two readings, a systolic and a diastolic. Systolic is the top number in the reading and tells the pressure in the arteries when the heart beats. Diastolic pressure is the bottom number in the reading and measures the pressure in the arteries between the heartbeats. A normal blood pressure reading is about 120 or less / about 80 or less. Typically, more attention in given to the systolic measure in blood pressure and has been identified as a major risk factor for cardiovascular disease.

Experiment #1
Ausculating Heart Sounds
Hypothesis: Does my partner have a healthy heart?
Results: While using the stethoscope I was able to auscultate my partner’s heart sounds. I was able to listen to the “lub-dup” sound rhythm....
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