24 Questions
Which of the following is NOT a component of blood?
Adipocytes
True or false: Peripheral resistance is the only factor that causes pressure to dissipate and flow velocity to reduce in blood capillaries.
False
What is the function of the Hagen-Poiseuille equation?
To predict the flow rate of a fluid in conduits
True or false: The Hagen-Poiseuille equation predicts the flow rate of a fluid only in blood vessels of a specific diameter.
False
What is the role of precapillary sphincters and smooth muscle cells in arterioles?
To control blood flow and flow rates
What is the function of the Hagen-Poiseuille equation?
To predict the flow rate of a fluid in conduits
True or false: Precapillary sphincters and smooth muscle cells in arterioles have no role in controlling blood flow and flow rates.
False
Which of the following is responsible for the generation of systolic pressure?
Contraction of the heart
What is the composition of blood?
Plasma and cellular elements
What is the function of the precapillary sphincters?
To control blood flow in the arterioles
What is the function of erythrocytes?
To carry respiratory gases to and from body cells
True or false: Interstitial fluid is recaptured only through osmotic pressure.
False
What is the difference between systolic and diastolic pressure?
Systolic pressure is generated when the heart contracts, while diastolic pressure is generated by the elastic recoil of the arteries
What is the function of erythrocytes in the blood?
To carry respiratory gases to and from body cells
True or false: The mammalian heart has three chambers.
False
What is the purpose of the pulmonary arteries?
To carry oxygen-poor blood to the lungs
What is the function of the pulmonary arteries?
To carry deoxygenated blood to the lungs
True or false: During atrial systole and ventricular diastole, blood flows from the ventricles to the atria.
False
What is the role of the lymphatic system?
To recapture interstitial fluid through osmotic pressure
What is the function of the lymphatic system?
To recapture interstitial fluid
True or false: Cardiac output is a measure of the volume of blood pumped per minute by both atria.
False
How is cardiac output measured?
By measuring the volume of blood pumped per minute by each ventricle
How is blood pressure reduced in blood capillaries?
Through the no-slip condition, or peripheral resistance
True or false: Erythrocytes carry respiratory gases to and from body cells and also play a role in defending the body against pathogens.
False
Study Notes
- Mammals have a closed circulatory system called the cardiovascular system.
- Blood travels from the heart through blood vessels of varying diameters.
- The systolic pressure is generated when the heart contracts and the diastolic pressure is generated by the elastic recoil of the arteries.
- Peripheral resistance explains why pressure dissipates and flow velocity is reduced in blood capillaries.
- The no-slip condition, or peripheral resistance, reduces blood flow and pressure.
- The Hagen-Poiseuille equation predicts the flow rate of a fluid in conduits.
- Precapillary sphincters and smooth muscle cells in arterioles control blood flow and flow rates.
- Interstitial fluid is recaptured through osmotic pressure and the lymphatic system.
- Blood is driven back to the heart through the action of two types of muscle tissues.
- The mammalian heart has four chambers and is composed of cardiocytes.
- The cardiac cycle is split into three stages.
- The pulmonary arteries are histologically different from other arteries, contributing to lower pressure in the pulmonary circuit.1. The heart has different stages during the cardiac cycle.
- During atrial systole and ventricular diastole, the atria contract to force blood into the ventricles.
- During ventricular systole and atrial diastole, the ventricles contract to prevent blood from entering the atria.
- Cardiac output measures the volume of blood pumped per minute by each ventricle.
- Blood is a type of connective tissue that functions in the transport of substances, defence, and fluid balance.
- Blood is composed of plasma and cellular elements.
- Plasma carries nutrients, respiratory gases, hormones, and waste products.
- Plasma also contains important proteins functioning in pH and fluid balance, clotting, and defence.
- Cellular elements of blood include leukocytes, platelets, and erythrocytes.
- Erythrocytes carry respiratory gases to and from body cells.
Test your knowledge on the fascinating world of mammalian circulatory systems and blood with this quiz! From the structure and function of blood vessels to the intricacies of the cardiac cycle, this quiz covers it all. Impress your friends with your knowledge of the Hagen-Poiseuille equation and the role of leukocytes in defence. Challenge yourself and see how much you know about this vital aspect of mammalian biology.
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