True or false 1/The coronary circulation provides blood flow to the myocardium.

Question

True or false 1/The coronary circulation provides blood flow to the myocardium. The main arteries of the coronary circulation are left and right coronary arteries; the main veins are the cardiac vein and the coronary sinus. 2/ Phases of an action potential in a ventricular contractile fiber include rapid depolarization, a long plateau and repolarization. 3/ Cardiac muscle has a long refractory period, which prevents tetanus. 4/ Pulmonary ventilation or breathing consists of inhalation and exhalation 5/ The surface tension exerted by alveolar fluid is increased by the presence of surfactant. 6/ Lung capacities, the sums of two or more lung volumes include inspiratory, functional, residual, vital, and total lung capacities. 7/ A cardiac cycle consists of the systole and diastole of both atria, plus the systole and diastole of both ventricles. 8/ The kidneys are retroperitoneal organs attached to the posterior abdominal wall. 9/ Internally, the kidneys consist of a renal cortex, a renal medulla, renal pyramids, renal papillae, renal columns, calyces and a renal pelvis. 10/ In the presence of ADH, the kidneys produce dilute urine; renal tubules absorb more solutes than water. 11/ Nephrons perform three basic tasks: glomerular filtration, tubular secretion, and tubular reabsorption. 12/ The trachea extends from the pharynx to the primary bronchi. 13/ Primary bronchi give rise to branches called segmental bronchi, which supply segment of lung tissue called bronchopulmonary segments. 14/ During forceful inhalation, accessory muscles of inhalation are used. 15/ Compliance is the ease with which the lungs and thoracic wall can expand. 16/The human body consists of 5 levels of structural organization: cellular, tissue, organ, system and organismal.

Explanation / Answer

1) True

2) True

3) True

4) True

5) False

6) False (residual is not included)

7) True

8) False ( It is located in the anterior side of peritonium)

9) True

10) False ( It regulates the water balnce in the body, when it decrease more urine output occurs)

11) True

12) True

13) True

14) True

15) false

16) False ( organ gives rise to system not organismal)

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