The pericardial cavity contains _____.   A blood vessels supplying the heart muscle and adipose tissue   B 10-20ml of watery (serous) fluid   C about 500ml of oxygenated blood   D about 100ml of air to provide the heart muscle with oxygen   E All of these are found in the pericardial cavity

Q: Description 1. Microscopic blood vessels with thin, porous walls; site of gas exchange between…

A: microscopic blood vessels with small porous wall for exchange of gases between the blood and the…

Q: Which of the following sentences is NOT true? A. Decreased blood oxygen levels triggers…

A: Erythropoietin is the hormone which stimulates the production of RBC.

Q: If one gram of hemoglobin has an oxygen capacity of 1.34 ml of oxygen, if hemoglobin concentration…

A: The total oxygen content of  CaO2 (arterial blood) is the sum of Hb bound O2 and dissolved oxygen.…

Q: The major baroreceptor(s) used to regulate blood pressure is/are located in… Group of answer…

A: Baroreceptors sense the change in blood pressure and transmit information to the brain so that…

Q: When is the blood pressure in the left ventricle greater than the blood pressure in the aorta?   A…

A: Cardiac cycle is a cycle through which atrial contraction ends with  ventricular relaxation. When…

Q: Which structure is labelled "C"? questions. Aorta Black arrows indicate direction of blood flow Blue…

A: Human circulatory system Blood arteries that convey blood away from and towards the heart make up…

Q: For questions #10-20, match each term to its definition. _____ . Vein…

A: Heart is defined as the hollow muscular organ which is composed of several layers of cardiac muscles…

Q: The most abundant formed element(s) of blood is/area. plasma.b. erythrocytes.c. platelets.d.…

A: Blood is the fluid connective tissue derived from the mesoderm. It is slightly alkaline with a pH of…

Q: A Myocardial Infarction is defined as: a. Chest pain that usually starts with physical exertion and…

A: Human Heart is a four-chambered, fibro-muscular organ. There are two atria through which the heart…

Q: The sac that provides a fluid-filled cushion for the heart is composed of (z) an inner visceral…

A: The conical sac of fibrous tissue, which surrounds the heart and the roots of the great blood…

Q: In a healthy individual, the overall balance of filtration and absorption for all of the capillaries…

A: The capillary exchange refers to the draining of plasma, gas, water into the tissue spaces…

Q: MATCH the NUMBERS from the HEART diagram WITH THE DESCRIPTIONS 10 points :Some numbers can be used…

A: S.A node is locaed - right atrium  6   Carries oxygenated blood to heaet - pulmonary vein  1…

Q: In humans, blood returning to the heart from the lungs returns toa. the right ventricle. d. the left…

A: In humans, the route of blood through the pulmonary circuit is as follows: Right ventricle -->…

Q: A blood vessel adapted to withstand a highpulse pressure would be expected to havea. an elastic…

A: The various types of blood vessels include: arteries, veins, arterioles, venules and capillaries.…

Q: 20. Which of the following is the most (largest) muscular chamber in a bird's heart or a mammal…

A: 20.) Answer is d.)  left ventricle.  21.) Answer is c.)  capillaries.

Q: Which of the following statements is false?a. Only arteries carry oxygenated blood.b. Both arteries…

A: Components of closed circulatory system It consists of heart to pump the blood, blood vessels like’s…

Q: نقطة واحدة Veins .1 a.Carry blood away from the heart. O b.Connect the smallest arteries to the…

A: * veins are the blood vessels which carry blood toward heart. *They carry deoxygenated blood to…

Q: A major advantage of a double circulation is thata. blood can be pumped to the upper portions of the…

A: The body organs work systematically to regulate the proper body functioning. The different organ…

Q: A blood vessel adapted to withstand great fluctuations in blood pressure would be expected to have:-…

A: Blood vessels refer to the network of arteries, veins, capillaries that helps in the circulation of…

Q: UACYL .com/forms/d/e/1FAIpQLSfIHzragocEFvvDxW Which of the following best describes the flow of…

A: oxygenated blood -  pulmonary vein - left atrium - left  ventricle - aorta     thrombocytes or…

Q: During systemic circulation, blood leaves the __________."   A right atrium and goes directly to…

A: Complete double circuit circulatory system is found in crocodiles, birds and Mammals. Their heart is…

Q: A decrease in hematocrit will result in (21) blood viscosity and (22) blood pressure Body growth…

A: Blood vessels are the channels of blood which help in transport of blood across the body from the…

Q: This blood vessel allows diffusion of gases between blood and body tissues. O A. Artery O B. vein O…

A: The cells in the body requires nutrients oxygen and other necessities for its metabolic activities…

Q: Which of the following characteristics is unique to capillaries and not to other blood vessels?…

A: The blood vascular system has various components that help in the smooth circulation throughout the…

Q: In a patient with _______ some of the oxygenated blood returning to the left atrium would be pumped…

A: The blood enters the heart's right atrium from the body, where it moves to the right ventricle and…

Q: Up to 65% of the body's blood supply is found in __________.   A arteries and arterioles   B…

A: Blood is a viscous fluid present in animals and humans that carries all essential nutrients,…

Q: Which is not true about our heart A. ventricular systole squeezes blood to the lungs and the body B.…

A: Heart is a muscular organ that helps puno blood to different body organs. It has four chambers,…

Q: Can you please explain how to use this equation to get Flow(ml/min) Blood flow = π  ΔP r4 / ​8Lv

A: The network of capillaries supplies oxygenated blood to the various tissues. The blood rich in…

Q: If partial pressure of oxygen were about 35 MMHG and the capillaries then

A: The normal partial pressure at sea level in capillaries is 75-100 mmhg. The partial pressure in…

Q: The only vessels that provide direct access oxygen and nutrients to nearly every cell in the body…

A: Circulatory system is also known as cardiovascular system which allows circulation of blood and…

Q: Which statement is true? A. All arteries carry oxygen-rich blood. B. All veins carry oxygen-rich…

A: The heart pumps blood and circulates it throughout all the body parts for their functioning. The…

Q: Given: Capillaries are where the magic of gas diffusion happens. Capillaries are approximately 5-10…

A: The smallest unit of the blood vessels that convey blood between arteries and veins are known as…

Q: 38. All blood cells are produced in the A. red bone marrow. B. yellow bone marrow. C. white bone…

A: Introduction  In humans and many animals, Blood is a fluid connective tissue. The heart pumps blood…

Q: Match the following:   ?  Myocardium  ? Parietal Pericardium   ? Endocardium  ?    Visceral…

A: Step 1 The heart is a hollow, fibromuscular conical pyramidal mesodermal organ that lies obliquely…

Q: The advantage of having a heart with two atria is that a) oxygenated and deoxygenated blood are…

A: The human heart has 4 chambers :  Left atrium Right atrium Left ventricle Right ventricle The…

Q: 1. The tunica media of blood vessels contain the following structures except _____. A. endothelial…

A: The heart's role in any organism is to keep "blood" flowing continuously throughout the body. Blood…

Q: Which valves are closed during isovolumetric contraction & isovolumetric relaxation of the…

A: The Human heart is the Center for regulating blood across the body. It is located within the…

Q: Just number 18

A: Heart consists of four chambers- Right auricle, Right ventricle, Left auricle, Left ventricle.The…

Q: Match the following structures with their functions a. blood clotting b. matrix of blood and…

A: Human body is a complex machine required in many processes to function efficiently. To keep these…

Q: Which of the following statements about the circulatory system is false? A. Blood in the aorta is…

A: Option A  and Option B are True because:- Largest artery is the aorta, which connects to the heart…

Q: Blood pressure is higher in the ______ than in the ______.   A "systemic veins, systemic arteries"…

A: The force by which the blood pushes itself against the the walls of the organs and components of of…

Q: Which of the following is not included in the blood plasma? a) Sodium ions b) Water c) Urea d)…

A: Blood is a circulating fluid that flows within the blood vessels to deliver oxygen and nutrients…

Q: The diagram shows a human heart and some of its major blood vessels. Blockage of which labelled part…

A: Coronary heart disease or atherosclerosis happens when the major arteries of the heart get damaged.…

Q: A membrane called the _____ covers the heart. A membrane superficial to this membrane is the _____.…

A: The pericardium is the thin sac-like covering of the heart. It lubricates the heart and is required…

Q: The left ventricular wall of the heart is thicker than the right wall in order to ________.   A…

A: Heart is muscle which pumps blood to all parts of your body to provide it with the oxygen and…

Q: Prolonged pressure on the skin causes reddened areas at the point of contact due to: Select one: a.…

A: A pressure ulcer is also known as bed sores or pressure sores is an injury in the skin and…

Q: Which of the events below does not occur when the semilunar valves are open?   A Ventricles are in…

A: The heart valves regulate the blood flow into and out of the heart. The normal human heart contains…

Q: The presence of __________ stabilizes the wall of arterioles and capillaries.   A gap junctions   B…

A: An arteriole is a very small blood vessel as it has a very small diameter. These arterioles are…