Lecture 4 Cardiovascular Flashcards
The blood vascular system
A. Is a continuous, open-entry drainage system
B. Is a one-way, open entry drainage system
C. Is a continuous, closed supply and drainage system
D. Is a one-way, closed supply drainage system.
C
The lymphatic system (vascular)
An open-entry system (one way)
Arteries change their names based upon which of the following? A. Diameter B. Branch C. Direction D. Organ.
B
Which of the following statements is TRUE?
A. Continuous capillaries are controlled but leaky.
B. Sinusoidal capillaries are tight and controlled
C. Fenestrated capillaries are leaky
D. To pump blood back to the heart, veins have higher pressure than arteries.
C
Which of the following statements is true?
A. The right atrium receives the four pulmonary veins
B. The right atrium receives the superior vena cava, and inferior vena cava
C. The left atrium receives the superior vena cava, and inferior vena cava
D. The heart is surrounded by a layer of the fibrous endocardium
B. The right atrium also receives the coronary sinus
The interventricular septum
A. separates the left and right atria
B. Separates the pericardial cavity from the ventricles
C. Separates the four pulmonary veins
D. Separates the left and right ventricles.
D.
Which structure is responsible for preventing blood from returning to the right atrium during ventricular contraction? A. chordae tendinae B. Bicuspid lavlve C. Tricuspid valve D. Epicardium
C.
Which of the following blood vessels assists with cardiac muscle supply? A. Circumflex artery B. Coronary sinus C. Aorta D. Small cardiac vein
Circumflex artery
Cardiac muscle structure can best be described as
A. Striated, short, skinny, and interconnected by intercalated disks.
B. Striated, long, skinny, nucleus packed at the poles, interconnected by chemical synapses
C. Striated, long, fat, central nucleus, interconnected by desmosomes.
D. Striated, short, fat, central nucleus, interconnected by intercalated disks.
D
Which of the folowing best describes the conduction pathway of the heart?
A. SA node, AV node, internodal pathways, AV bundle, Purkinje fibres
B. AV node, SA node, internodal pathways, AV bundle, Purkinje fibres
C. AV bundle, AV node, internodal pathways. SA node, purkinje fibres
D. SA node, internodal, AV node, AV bundle, Purkinje fibres
D
The three layers of blood vessel walls, from into our is best described as
A. Tunica intima, tunica media, tunica adventitia
B. Endothelium, sub-endothelium, internal elastic lamina
C. Tunica adventitia, tunica media, tunica intima
D. Endocardium, myocardium, epicardium
A
The tunica media A. Consists of smooth muscle B. Consists of cardiac muscle C. Has a thickness proportional to vessel diameter and blood pressure D. Both A and C
D
The tunica adventitia A. Contains loose FCt B. Contains vasa vasorum in larger vessels C. Contains the internal elastic lamina D. Both A and B
D
Which of the following vessels would require the most elasticity? A. Femoral vein B. Femoral artery C. Thoracic aorta D. Coronary artery
C. Arteries under high pressure must be accommodated by the ability to be elastic, in this case the aorta would require the most.
Capillaries are best known for which of the following functions?
A. Beginning of the collecting/drainage system
B. Site of exchange between blood and tissues
C. Acting as capacitance vessels.
D. Acting as resistance vessels and determine blood pressure
B
Heart contraction is best described as
A. Right atrium, right ventricle, left ventricle, left atrium
B. Right atrium, right and left ventricles simultaneously, left atrium
C. RIght and left atria simultaneously, right and left ventricles simultaneously
D. Right and left ventricles simultaneously, right and left atria simulatenously
C
Which of the following statements is TRUE?
A. The tricuspid and mitral valves control flow between the ventricles and circulatory vessels.
B. The heart can be described as two pumps that lie in parallel
C. Every cardiomyocyte is activated during each beat of the heart
D. The arterial circuit sends oxygen-rich blood to the tissues and brings oxygen-poor blood back to the heart.
C
Which of the following statements is FALSE ?
A. Ventricular power is not equal between right and left ventricles
B. Pulmonary and systemic blood flow is equal
C. Pulmonary and systemic blood pressure is not equal
D. None of the above, they are all true.
D
Which of the following statements is TRUE?
A. Flow-through blood vessels is determined by pressure and resistance
B. Cellular contraction is initiated by a decrease in cytosolic Ca2+ levels
C. Mean arterial blood pressure is normally equal to systolic blood pressure
D. The pulmonary circuit is supplied by the left ventricle.
A
In an electrocardiogram, the P wave is mainly representative of A. Ventricular depolarisation B. Ventricular repolarisation C. Atrial repolarisation D. Atrial depolarisation
D
In an electrocardiogram, the QRS is mainly representative of A. Ventricular depolarisation B. Ventricular repolarisation C. Atrial repolarisation D. Atrial depolarisation
A.
Which of the following statements is TRUS?
A. Capillary beds have a relatively small cross-sectional area
B. Precapillary sphincters are composed of smooth muscle cells
C. The lymph vascular system absorbs fat from the intestines
D. Both B and C
D
The collecting vessel which lacteals drain fat-laden lymph is called A. The cisterna chyli B. The thoracic duct C. The internal jugular vein D. The lymphatic duct.
A
Which vessel of the blood vacular system receives lymph from the left side of the body? A. The aorta B. The thoracic duct C. The left subclavian vein D. The cisterna chyli
C
