A recording of the electrical activity of a patient’s heart shows that the atria are contracting regularly and normally, but every few beats the ventricles fail to contract. Which of the following is probably not functioning properly?
A. AV node
B. Semilunar valve
C. SA node
D. AV valve
Select your answer:
Topics:
Year 7 Nutrition Glucose in the Body Enzymes Coronary Heart Diseases Who am Eye? Cell Transport Hair Evidence Sarcomere Anatomy Facial & Dental Injuries Multicellular Organisms CPR Digestion HHB Immunology The Brain Our Control Center Nail EnhancementOther quiz:
Integumentary System › ViewWhich layer of the skin contains nerves, blood vessels, and sweat glands?
A. Epidermis
B. Dermis
C. Subcutaneous tissue
Tissues › View
the water conducting tissue generally present in gymnosperm is
A. vessels
B. sievetube
C. tracheids
D. xylemfibres