Which structure is highlighted in blue and indicated by the yellow arrow in this image? A) left atrium B) right ventricle C) right atrium D) left ventricle

Blood flowing from the pectoral appendages to the heart would flow through which of the following vessels? **Can someone please answer my question within 15 minutes :)** Question 5 options:   A)  Posterior cardinal veins   B)  Subclavian veins   C)  Posterior vena cava   D)  Lateral abdominal veins   E)  Renal portal veins   F)  Hepatic portal veins   G)  Subclavian arteries

Valve regurgitation is yet another condition causing heart failure.  This condition is characterized by _________________. 1)the hardening of a valve, narrowing the opening that serves as a passage of blood.   2) a valve that everts back into the previous chamber, blockig blood from progressing into the ventricle.   3) a valve that does not close completely, and allows blood to leak back into the previous chamber.   4)a valve with an opening that is too narrow, not allowing for sufficient blood to travel to the next chamber.

(a) Name the type of blood vessel labelled (i) C. (ii) D. (b) In which direction does blood in vessel A travel? (c) Which of the four blood vessels contains the most oxygen? (d) What happens to the amount of oxygen in the blood as it passes through the body organs? (e) What is the chamber of the heart labelled X? ·

Which of these events occurs during (ventricular) systole? A)Only the left ventricle contracts. B)The ventricles fill with blood. C)Both ventricles contract. D)The atria fill with blood

In which of the heart chambers would deoxygenated blood be found? A)left atrium and left ventricle B)right atrium and left atrium C)right atrium and right ventricle D)left atrium and right ventricle