Which of the following is incorrect? Group of answer choices The walls of the cappillaries are thick. Vasoconstriction is one way to control blood flow. The walls of the veins are thin. There are no valves in the arteries. Veins carry blood into the heart.

Which one of the following statements is incorrect? There are no valves in arteries. the walls of veins are thin. the walls of capillaries are thick. veins carry blood into the heart.

Poor quality capillaries can rupture and bleed small amounts into the tissue. On the surface it looks like several tiny red dots. This is called ___.     embolus     varicose veins     petechia     cicatrix

Choose all the statements that are correct. When the heart beats, first the right side of the heart contracts, and then the left side of the heart contracts. That is one heartbeat. The sympathetic nervous system speeds up the heart rate and the parasympathetic system slows down heart rate. M Bradycardia is when the heart beats faster than normal. The SA node is the pacemaker of the heart. Coronary arteries deliver blood to the muscle of the heart. A heart attack is a myocardial infarction. The ECG (EKG) has a QRS wave that represents ventricular depolarization (the message to tell the ventricle to contract. The heart needs nerve stimulation in order to contract.

Use the word bank below to complete the following statements: Tissue capillary higher lower oxygen carbon dioxide waste nutrients On the arteriole side of a capillary bed, the capillary hydrostatic pressure is than the blood colloidal osmotic pressure. This causes a net movement of liquid into the This liquid contains a lot of gas and which move down a concentration gradient towards local cells that are continually consuming those resources. On the venule side of the capillary bed, the capillary hydrostatic pressure is than the blood colloidal osmotic pressure, resulting in a net movement of liquid into the . After passing over local tissues, the composition of the liquid has changed, and now contains a lot of gas and Only (write a number and a % sign) of fluid returns to the circulatory system. The remaining portion of fluid is collected by the lymphatic system.

A patient has a condition in which the SA node is no longer functioning. The atrioventricular (AV) node is now setting the pace and rhythm for the heart. What difference would you expect to see in the ECG of this patient? Group of answer choices P wave would be much larger than normal there would continue to be a normal sinus rhythm QRS complex would be absent the rhythm would be slower

A superficial blood vessel that extends upward along the lateral aspect of the forearm which drains blood from the hand. Group of answer choices cephalic vein basilic vein saphenous vein axillary vein

The English physiologist William Harvey made all of the following circulatory discoveries except: the function of valves in the veins is to direct blood flow back to the heart both pulmonary and systemic blood pressure comes from pumping of the heart blood in the veins is under less pressure than is blood in the arteries arterial pressure is lowest during systole and greatest during diastole the function of the vertebrate heart is to pump blood continuously

which of the following is the first to occur during the period of ventricular systole? QRS complex, sharp rise and ventricular pressure, or blood leaving the ventricle.

The diagram shows a double circulatory system. The diagram shows a double circulatory system. 2 capillaries of the lungs capillaries of the rest of the body heart Which vessels cary oxygenated blood? A 1 and 2 1 and 4 2 and 3 D 2 and 4 Which vessels carry oxygenated blood? A В