Wait a second!
More handpicked essays just for you.
More handpicked essays just for you.
Essay of blood circulation systems
Don’t take our word for it - see why 10 million students trust us with their essay needs.
Jessica Malcomb
Lab 4
Pre-Lab Questions
1. Draw a map of blood traveling through the closed system of the circulatory system starting with the right atrium.
Right Atrium Tricuspid Valve Right VentriclePulmonary Artery LungsPulmonary VeinLeft AtriumBicuspid ValveLeft Ventricle
AortaBody
2. What are the main resistance vessels of the circulatory system? How are they controlled?
The main resistance vessels of the circulatory system are veins, arteries, and lymph. They are controlled by the autonomic nervous system.
Experiment 1:
Post-Lab Questions
1. Label each of the items in the following slide pictures based on your observations.
A. Tunica Adventia
B. Tunica Intima
C. Tunica Media
D. Lipids
E. Tunica Intima
F. Tunica Adventia
…show more content…
What is systolic pressure? Diastolic pressure?
Systolic Pressure is when the ventricles contract
Diastolic Pressure is when the ventricles relax
2. Why is pressure a sensible reading to measure circulatory health?
Because it is a way of knowing the pressure that the blood is putting on the walls of arteries and veins.
3. Explain the “lub-dub” sounds of the heartbeat.
It is the sound that occurs when the valves in the heart opens and closes. The lub sound is heard when the bicuspid valve closes and blood is in the ventricle. The dub sound is heard when the aortic and pulmonary valve shut.
4. Why do blood pressure and heart rate change after exercise?
Because as you exercise the cells in your body will need more oxygen. So therefore, the heart will pump harder to get more oxygen
5. How might the results in Table 2 change if someone else preformed the activities? Why?
It could be different if you were to get someone who was in great physical shape because over time exercise will help to decrease the resting hearts rate.
6. Why is it important for blood to flow in only one direction?
Because the heart has valves that prevents backflow. Also oxygen rich blood can’t mix with oxygen poor blood and the force of blood continues to push blood in the direction it should be
Pre-exercise: For this activity, each group member needed to be familiar with taking and reading another group member’s blood pressure. Many types of instruments exist for measurin...
The Structure and Functions of the Arteries Arteries are blood vessels that convey blood from the heart to the tissues of the body. The arteries expand and then constrict with each beat of the heart, a rhythmic movement that may be felt as the pulse. Arteries are usually named from the part of the body that they are found, for example; brachial artery found in the arms, metacarpal artery found in the wrist; or from the organ which they supply as the hepatic artery supplies the liver, pulmonary artery brings deoxygenated blood the lungs. The facial artery is the branch of the external carotid artery that passes up over the lower jaw and supplies the superficial portion of the face; the haemorrhoidal arteries are three vessels that supply the lower end of the rectum; the intercostal arteries are the arteries that supply the space between the ribs; the lingual artery is the branch of the external carotid artery that supplies the tongue. The structure of the artery enables it to perform its function more efficiently.
Every one of these parts has a specific job so that the system can work properly. The main function of the circulatory system is a basic loop, the starts and finishes in the heart. Specifically, the system starts in the right atrium, the upper right chamber of the heart. As the blood flows through here, it continues through the other three chambers of the heart. After this, it goes straight to the lungs to eliminate any carbon dioxide and to collect oxygen and then ends in the lower left hand chamber called the left ventricle.
This study assessed heart rate, blood pressure, and pulse oximeter readings at rest and during exercise. The heart rate (HR), blood pressure (BP), and oximetery measurements provide better insight into the inner workings of the human body. In using the results of the assessment, one can determine the affects that rest and exercise have on the cardiac system.
The pattern of blood flow starts in the left atrium to right atrium, then into the left ventricle and right ventricle. During its course, blood flows through the mitral and tricuspid valves. Simultaneously, the right atrium is granted blood from the veins through the superior and inferior vena cava. The job of the superior vena cava is to transport de-oxygenated blood to the right atrium. When your heart beats, the first beat represents the AV valves closing to prevent the backflow of blood into the atrium.
The heart serves as a powerful function in the human body through two main jobs. It pumps oxygen-rich blood throughout the body and “blood vessels called coronary arteries that carry oxygenated blood straight into the heart muscle” (Katzenstein and Pinã, 2). There are four chambers and valves inside the heart that “help regulate the flow of blood as it travels through the heart’s chambers and out to the lungs and body” (Katzenstein Pinã, 2). Within the heart there is the upper chamber known as the atrium (atria) and the lower chamber known as the ventricles. “The atrium receive blood from the lu...
side of the heart pumps oxygen-poor blood from the cells of the body back to the
This force transfers into the arteries and arterioles in other parts of the body as the blood moves away from the heart. Once the intensity drops and the stress on the heart decreases, the pressure in the arteries also reduces due to the less forceful contractions. Therefore, the hypotheses were accepted based on the averages of the data collected during the experiment. However, in order to have more accurate data, a larger sample size would be needed. In addition, using machines to measure heart rate and blood pressure could make the data more accurate than the process that was used in this experiment. Increased accuracy could also have been seen if there were more trials done when taking heart rate and blood pressure during the exercise stages and then averaging those
One of the main organs of the cardiovascular system is the heart; the heart is made up of four chambers. The blood enters the right atrium of the heart from body through the venae cavae, it then travels though the tricuspid atrioventricular valve into the right ventricle. The blood is then pumped through the pulmonary semilunar valve out of the heart to the lungs using the pulmonary arteries. It is then oxygenated and returns to the left atrium in the pulmonary veins it travels through the mitral atrioventricular valve into the left ventricle and is then pumped out of the heart to the systematic circulatory system passing through the aortic semilunar valve into the aorta. (Widamaier, et al 2011:359)
AIM: - the aim of this experiment is to find out what the effects of exercise are on the heart rate. And to record these results in various formats. VARIABLES: - * Type of exercise * Duration of exercise * Intensity of exercise * Stage of respiration
The cardiovascular system is composed of three organs in the human body: the heart, blood vessels, and blood. It is centered on the heart a powerful organ that steadily pumps blood to a complex system of blood vessels that extends to the entire body. The blood that is pumped to the body is rich with oxygen and nutrients needed to fuel the activities of the body’s tissues and organ. An average-sized adult carries about 5 liters (9 pints) of blood through the vessels, or better known as arteries (Seidel et al., 2014). In addition, the blood vessels can be described as the highway in which the blood travels on in order to get to all the organs in the human body. Furthermore, the vessels are connected to the heart and these two organs work in concert (i.e. together) in order to supply the human body with blood (Goff et al., 2013).
Abstract:Dorland's Illustrated Medical Dictionary defines the heart as "the viscus of cardiac muscle that maintains the circulation of the blood". It is divided into four cavities; two atria and two ventricles. The left atrium receives oxygenated blood from the lungs. From there the blood passes to the left ventricle, which forces it via the aorta, through the arteries to supply the tissues of the body. The right atrium receives the blood after it has passed through the tissues and has given up much of its oxygen.
Your heart is a special type of muscle. Previous to each beat, your heart fills with blood. To get the blood circulating, the muscle contracts. The heart is similar to a pump; the right side takes in the blood from the body and pumps it into the respiratory system, the lungs. The left side pumps the blood to the body and receives the blood from the lungs. The left side and right side's functions are opposite from each other.
The highway system of the Circulatory System consists off a lot of one-way streets. The main routes used by the circulatory system are the veins and arteries. Veins are used to carry blood to the heart. Arteries then carry blood away from the heart. Most of the time, blood in the veins is blood where most of the oxygen and nutrients have already been delivered to the cells. This blood is called deoxygenated and is very dark red. Most of the time blood in the arteries is loaded with oxygen and nutrients and the color is very bright red. There is one artery that carries deoxygenated blood and there are some veins that carry oxygenated blood. In order to get more research on this I had to look up some information on the heart and lungs.