Podcast
Questions and Answers
Which arteries supply the conduction system of the heart?
Which arteries supply the conduction system of the heart?
- C. Carotid arteries
- A. Coronary arteries (correct)
- D. Renal arteries
- B. Pulmonary arteries
What is the anatomical position of the conducting system of the heart?
What is the anatomical position of the conducting system of the heart?
- D. Located in the aorta
- B. Located in the atria (correct)
- C. Located in the coronary arteries
- A. Located in the ventricles
What is the importance of the anastomoses between the coronary arteries?
What is the importance of the anastomoses between the coronary arteries?
- B. They provide oxygenated blood to the heart muscle (correct)
- A. They regulate heart rate
- C. They drain venous blood from the heart
- D. They control the autonomic innervation of the heart
Which artery determines the coronary dominance in approximately 80% of people?
Which artery determines the coronary dominance in approximately 80% of people?
What percentage of the venous blood of the heart is drained by the coronary sinus?
What percentage of the venous blood of the heart is drained by the coronary sinus?
Which artery supplies both the sinoatrial (SA) and atrioventricular (AV) nodes?
Which artery supplies both the sinoatrial (SA) and atrioventricular (AV) nodes?
Which part of the heart is the only conductive route through the fibrous skeleton?
Which part of the heart is the only conductive route through the fibrous skeleton?
Which nerve fibers are responsible for decreasing the heart rate?
Which nerve fibers are responsible for decreasing the heart rate?
Where does the Left Bundle branch descend along the membranous part of the IV septum?
Where does the Left Bundle branch descend along the membranous part of the IV septum?
Which nodes are not macroscopic in the heart?
Which nodes are not macroscopic in the heart?
Which hormone is released by the pituitary gland in response to increased osmotic pressure and hypovolemia?
Which hormone is released by the pituitary gland in response to increased osmotic pressure and hypovolemia?
What is the primary determinant of long-term regulation of blood pressure?
What is the primary determinant of long-term regulation of blood pressure?
How are changes in blood volume and blood osmotic pressure sensed and altered?
How are changes in blood volume and blood osmotic pressure sensed and altered?
What leads to an increase in antidiuretic hormone (ADH) release?
What leads to an increase in antidiuretic hormone (ADH) release?
What is the effect of hypotension on arterial baroreceptor firing?
What is the effect of hypotension on arterial baroreceptor firing?
Which hormone is responsible for increasing water permeability in renal collecting ducts and decreasing urine production?
Which hormone is responsible for increasing water permeability in renal collecting ducts and decreasing urine production?
Which hormone is released from the adrenal glands in response to angiotensin II and increases sodium and water reabsorption in the kidneys?
Which hormone is released from the adrenal glands in response to angiotensin II and increases sodium and water reabsorption in the kidneys?
Which hormone is released from the muscle cells of the atria in response to stretch and helps oppose the effects of the renin-angiotensin-aldosterone system?
Which hormone is released from the muscle cells of the atria in response to stretch and helps oppose the effects of the renin-angiotensin-aldosterone system?
Which enzyme is released from the kidneys in response to sympathetic nerve activation, renal artery hypotension, and decreased sodium in kidney distal tubules?
Which enzyme is released from the kidneys in response to sympathetic nerve activation, renal artery hypotension, and decreased sodium in kidney distal tubules?
Which classification of shock is characterized by a loss of more than 40% of blood volume?
Which classification of shock is characterized by a loss of more than 40% of blood volume?
Which of the following is a fundamental component of a reflex control system for blood pressure?
Which of the following is a fundamental component of a reflex control system for blood pressure?
Where are the main baroreceptors located in the body?
Where are the main baroreceptors located in the body?
What happens to the firing rate of baroreceptors when arterial blood pressure increases?
What happens to the firing rate of baroreceptors when arterial blood pressure increases?
What is the role of baroreceptors in the control of arterial pressure?
What is the role of baroreceptors in the control of arterial pressure?
Which nerve carries afferent fibers from the carotid artery baroreceptors?
Which nerve carries afferent fibers from the carotid artery baroreceptors?
Which receptors sense central blood volume in the body?
Which receptors sense central blood volume in the body?
Which reflex is a sympathetic-mediated reflex in response to increased blood in the atria?
Which reflex is a sympathetic-mediated reflex in response to increased blood in the atria?
Which part of the medullary cardiovascular control center (MCVC) is responsible for receiving input from baroreceptors?
Which part of the medullary cardiovascular control center (MCVC) is responsible for receiving input from baroreceptors?
Which effectors are controlled by both sympathetic and parasympathetic nerves in the reflex control of blood pressure?
Which effectors are controlled by both sympathetic and parasympathetic nerves in the reflex control of blood pressure?
Which theory explains the intrinsic ability of organs to maintain blood flow safely if blood pressure increases?
Which theory explains the intrinsic ability of organs to maintain blood flow safely if blood pressure increases?
Which equation represents the relationship between stroke volume, heart rate, and cardiac output?
Which equation represents the relationship between stroke volume, heart rate, and cardiac output?
What is the primary intrinsic mechanism that regulates stroke volume?
What is the primary intrinsic mechanism that regulates stroke volume?
What is the term for the pressure in the systemic and pulmonary vessels that controls cardiac output?
What is the term for the pressure in the systemic and pulmonary vessels that controls cardiac output?
What is the equation for mean arterial blood pressure (MABP)?
What is the equation for mean arterial blood pressure (MABP)?
What is the term for the compliance of the blood vessels?
What is the term for the compliance of the blood vessels?
Which of the following factors does NOT determine the magnitude of pulse pressure?
Which of the following factors does NOT determine the magnitude of pulse pressure?
Which factor does NOT contribute to resistance to flow in the blood vessels?
Which factor does NOT contribute to resistance to flow in the blood vessels?
Which equation represents the relationship between arterial pressure, cardiac output, and total peripheral resistance?
Which equation represents the relationship between arterial pressure, cardiac output, and total peripheral resistance?
How can mean arterial blood pressure (MABP) be calculated based on systolic and diastolic pressures?
How can mean arterial blood pressure (MABP) be calculated based on systolic and diastolic pressures?
Which of the following statements is true about the relationship between vessel radius and blood flow?
Which of the following statements is true about the relationship between vessel radius and blood flow?
