EMT Chapter 6: The Human Body Complete Questions and Answers

EMT Chapter 6: The Human Body Complete Questions and Answers The _____ is connected to the intestine by the bile ducts. Ans- liver. The leaf-shaped flap of tissue that prevents food and liquid from entering the trachea is called the: Ans- epiglottis Which of the following systems is responsible for releasing chemicals that regulate body activities? Ans- Endocrine There are _____ cervical vertebrae Ans- 7 There are a total of ____ lobes in the right and left lungs. Ans- 5 The movement of air between the lungs and the environment is called Ans- ventilation ___________ pressure is the pressure exerted by a liquid that occurs when blood moves through an artery at relatively high pressures. Ans- Hydrostatic Activities such as walking, talking, and writing are regulated by the: Ans- Somatic nervous system All critical life functions are coordinated in which part of the brain? Ans- brain stem Anterior to the knee is a specialized bone called the: Ans- patella As the bronchus divides into smaller bronchioles, the terminal ends of these smaller passages form the: Ans- Alveoli At rest, the normal adult heart rate should not exceed: Ans- 100 beats/min Bile is produced by the liver and concentrated and stored in the: Ans- gallbladder Both areas of the pons are used to: Ans- augment respirations during emotional or physical stress. Breathing occurs as the result of a(n): Ans- increase in carbon dioxide, which decreases the pH of the cerebrospinal fluid. Capillary sphincter closure during internal or external bleeding is detrimental because: Answaste products are not removed and nutrients are not delivered to the cells. Cardiac output (CO) is affected by: Ans- stroke volume and heart rate. Contraction of the right ventricle causes: Ans- blood to flow into the pulmonary circulation. Dead space is the portion of the respiratory system that: Ans- contains no alveoli and does not participate in gas exchange. Deoxygenated blood from the abdomen, pelvis, and lower extremities is returned to the right atrium via the: Ans- inferior vena cava. During each heartbeat, ___________ of blood is ejected from the adult heart, an amount called the stroke volume. Ans- 70 to 80 mL Hemoglobin is a molecule that attaches to ___________ and carries oxygen. Ans- erythrocytes In an otherwise healthy adult, blood loss would cause: Ans- vascular constriction and tachycardia. Key hormones of the sympathetic nervous system include: Ans- epinephrine and norepinephrine. Mean arterial pressure (MAP) is a product of: Ans- cardiac output and systemic vascular resistance. Negative-pressure breathing involves: Ans- a drop in pressure within the chest cavity. Oxygen and carbon dioxide pass across the alveolar membrane in the lungs through a process