Which is NOT true about arteries and veins? a) all arteries carry oxygenated blood, all veins carry deoxygenated blood b) arterial walls have more smooth muscle and elastic tissue compared to walls of veins c) arteries carry blood away from ventricles, veins carry blood toward atria d) arteries diverge, veins converge e) all are true

Q: A foreign particle that becomes lodged in a blood vessel is called a(n)   A)  embolus    B)…

A: Blood is a chief body fluid in the circulatory system that is involved in elimination of waste…

Q: What is the role of hemoglobin? A) It picks up CO2 and distributes it to the body B) It picks up O2…

A: Introduction: Hemoglobin is a respiratory pigment that is reddish in color. In humans, it is present…

Q: Which of the following white blood cells produces histamine and heparin? a) basophils b)…

A: Blood contains three types of cells majorly, red blood cells, white blood cells, and platelets. Red…

Q: the cardiovascular system is responsible for ensuring the body is able to access atmospheric oxygen…

A: Mitochondria provide energy in form of ATP in eukaryotic cells. However, it is not known when,…

Q: Which vessel is more preferred for coronary bypasses in the heart? A) lesser saphenous vein B) great…

A: There are many networks of vein and arteries throughout the body and with the help of these heart…

Q: Where are blood cells produced? A) in red marrow inside of bones O B) in the liver C) in yellow…

A: Mostly all type of the blood cells the red blood cells and the white blood cells and platelets are…

Q: Several years ago, the deaths of several airline travelers led to the warning about “economic-class…

A: Deep vein thrombosis or DVT It is a vascular condition in which a blood clot forms in a deep vein of…

Q: In the negative feedback loop of blood pressure regulation, which of the following would be the…

A: Negative feedback is referred to as one of the systems utilized by the body in order to maintain…

Q: Which of the following statements regarding heart valves is NOT true? a) They are flaplike…

A: The circulatory system's main organ is the heart. Actually, it serves as two distinct pumps. Blood…

Q: The left atrium receives oxygenated blood from the     A) pulmonary trunk.     B) pulmonary veins.…

A: The left atrium is one of the four chambers of the heart, and it receives oxygenated blood from the…

Q: In blood, what solutes contribute to osmotic pressure? A) platelets B) RBCs C) proteins, ions, &…

A: Blood is a liquid substance which flows in the blood vessels and carry nutrients and oxygen to the…

Q: The majority of exchange of gases and nutrients between blood and tissue takes place at the _____…

A: Cells need oxygen for aerobic respiration to occur. Amino acids and glucose are essential nutrients…

Q: Myogenic behavior of arterioles:

A: Arterial constriction in response to intravascular pressure is a common myogenic activity found in…

Q: How does an open circulatory system differ from a closed one? A)A closed circulatory system is…

A: The objective of the question is to understand the differences between an open circulatory system…

Q: At which level of the blood vessels system is where blood pressure regulation occurs? a) Capillaries…

A: Blood vessels are responsible for the transport of blood throughout the body in an individual. They…

Q: Which of the following is true? A) The kidneys are approximately 15% of the total body mass B) All…

A: A ll the above stated statements are true . The kidneys are approximately 15% of the total body mass…

Q: Which of the following is correct regarding individuals who are blood type AB? A) Their red blood…

A: A blood type is the classification of blood, based on the presence and absence of antibodies and…

Q: Directly after fluid leaks out a vessel into the surrounding tissue (due to ______ blood pressure)…

A: The blood is known to be the main transporting medium of the blood. It flows throughout the body to…

Q: 7) which of the following has the thickest wall? A) left ventricle B) right ventricle C) left atrium…

A: Please note that the answer is provided for MCQ # 7 and # 10. As all of these are separate…

Q: When blood first enters a capillary it tends to __ material; when the blood is leaving a capillary…

A: A network of microscopic, thin-walled blood vessels, known as capillaries, is present in the tissues…

Q: What substance is not required for coagulation?   a) Calcium b) Vitamin K c) Factor II d)…

A: Blood coagulation: it is the process of blood clot formation when needed by the body in response to…

Q: What does the circled structure do?

A: Heart Mesodermally derived organ, is situated in the thoracic cavity between the lungs, slightly…

Q: What does the circled structure do? A) signal SA node contraction B) serve as the hearts pacemaker…

A: Human heart is myogenic that means it can generates it's own impulse for the contraction. The…

Q: 8. After passing through the aortic semilunar valve, a red blood cell accidentally flows backwards…

A: The aortic semilunar valve is the valve that is present between the left ventricle and the aorta.…

Q: Which of the following conditions is reversible? (best answer) A) myocardial ischemia B) myocardial…

A: Myocardial fibrosis involves the formation of excessive fibrous tissue in the heart, which typically…

Q: A 30 year old female competitive cyclist lost the medal that she wom by finishing 1st in an…

A: Introduction: The whole blood comprises the fluid portion, named plasma, and the cellular components…

Q: W 8 Read aloud Section to li +880 ac Ask Copilot I A) Coarctation of the aorta B) Occlusion of the…

A: The objective of the question is to identify the most likely cardiac condition in a 4-year-old boy…

Q: Which structure is highlighted in blue and indicated by the yellow arrow in this image? A) left…

A: Thorax is a chest located between the neck and abdomen. It is formed by bones of the sternum, ribs,…

Q: Which of the following is a circulatory adjustment to sustained moderate exercise? A. Constriction…

A: Sustained moderate exercise require lot of skeletal muscle contraction. For continuous muscle…

Q: Normal heart sounds are caused by which of the following events? A) friction of blood against the…

A: The heart is a muscular, dual pumping organ that passes the deoxygenated blood through the pulmonary…

Q: If the vagal nerves to the heart were cutthe result would be that A) the heart would stop, since the…

A: The vagus nerve generally referred to as the pneumogastric nerve, is the 10th cranial nerve or CN X,…

Q: 10) blood pressure is lowest in the  A) capillaries B) arterioles C) veins D) venules E) arteries

A: The force that causes blood to circulate throughout the body is called blood pressure. The force of…

Q: Which of the following is false about open circulatory systems?   Question 5 options:   a)…

A: Introduction A circulatory system is a transport system through which nutrients, gases, and other…

Q: Ch. 5: A patient with a connective tissue disease experiences pulmonary vascular resistance. With…

A: The correct answer to this question is option B. i.e. increased thickness of the right ventricular…

Q: Blood flowing from the pectoral appendages to the heart would flow through which of the following…

A: Pectoral appendages refer to the upper forearm, clavicle, and scapula region i.e. the upper part of…

Q: 2. An otherwise healthy 82-year-old man has swelling of the left ankle after sitting and playing…

A: An enlargement of tissues due to fluid accumulation. For the coronary bypass surgery the saphenous…

Q: Select the correct statement regarding the AV node B) it produces the P wave on the EKG C) it is…

A: The human body is made of different organ systems. Different organs are made of tissues, which are…

Q: 2) attached to the heart. You are looking at the heart as it would appear in the chest of a person…

A: Heart, blood and blood vessels make circulatory system of our body.

Q: 91. In an experimental animal, the diameter of a precapillary arteriole is increased in a muscle…

A: Precapillary arterioles are the final generation of terminal arterioles. They have diameters less…

Q: The main purpose of the heart is to a)  pump blood through the body and blood through the lungs.…

A: The circulatory/cardiovascular system is the major organ system of our body that helps in…

Q: Relaxation of precapillary sphincters:  a) increases blood flow through ateriovenous shunt b)…

A: A precapillary sphincter is referred to as a band of contractile mural cells distinguished under…

Q: Which of the following changes happen at birth or a couple hours afterward? A) The connection…

A: After birth, several changes take place in the circulation of blood via the heart. After…

Q: in th 1) Which of the events below occurs when the semilunar valves are A) Ventricles are in…

A: Semilunar valves are named so because of the crescent moon shape of the flaps that make up the…

Q: Pick all the correct answers for electrocardiogram (EKG). A) measures the electrical activity of the…

A: An ECG or electrocardiogram is a non-invasive medical test used to measure the electrical activity…

Q: which of the following would increase the relase of erythropoietin by the kidneys?   A) all of…

A: Kidney is the excretory organ of the human body. It produces urine. Kidney consists of millions of…

Q: Clots in our blood can lead to a heart attack or stroke by blocking blood flow. If a clot were made…

A: Blood flow should be smooth so the blood may easily pass  by squeezing into the blood vessels. Some…

Q: When moving from lying down to standing, blood pressure would drop most significantly where?     a)…

A: Hypertension also called High blood pressure  which is the blood pressure that is higher than normal…

Q: Which of the following statements concerning capillaries is TRUE?   A) Capillaries are composed of a…

A: The capillaries are small blood vessels that have thin dividers. Oxygen and supplements from the…