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EMT Chapter 6 Exam: The Human Body Exam 2023

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The electrical impulse of the heart normally begins at the: a.) sinoatrial node b.) bundle of his c.) purkinje fibers d.) atrioventricular node Ans- sinoatrial node Each pelvic bone is formed by the fusion of the: a.) sacrum and ischium b.) ilium, ischium, pubis c.) pubis and acetabulum d.) ilium, pubis, and sacrum Ans- ilium, ischium, pubis The largest portion of the brain, which is commonly referred to as the ''gray matter,'' is called the: a.) cerebrum b.) cerebellum c.) brain stem d.) diencephalon Ans- cerebrum The supporting bone of the arm is the: a.) ulna b.) humerus c.) radius d.) clavicle Ans- humerus The cervical spine is composed of _______ vertebrae. a.) four b.) five c.) six d.) seven Ans- seven The brain connects to the spinal cord through a large opening at the base of the skull called the: a.) foramen ovale b.) vertebral foramen c.) spinous foramen d.) foramen magnum Ans- foramen magnum The axial skeleton is composed of the: a.) arms, legs, and pelvis b.) lower part of the torso and the legs c.) skull, face, thorax, and vertebral column d.) bones that comprise the pelvic girdle Ans- skull, face, thorax, and vertebral column Hemoglobin is a molecule that attaches to ________ and carries oxygen. a.) monocytes b.) erythrocytes c.) leukocytes d.) thrombocytes Ans- erythrocytes Which organ lies in the lateral and posterior portion of the left upper quadrant (LUQ) of the abdomen? a.) liver b.) stomach c.) cecum d.) spleen Ans- spleen The most distal four spinal vertebrae, which are fused together, form the: a.) ilium b.) coccyx c.) sacrum d.) ischium Ans- coccyx Anterior to the knee is a specialized bone called the: a.) tibia b.) patella c.) femur d.) calcaneus Ans- patella The femoral head forms a ball-and-socket joint with the: a.) ilium b.) ischium c.) acetabulum d.) femoral condyle Ans- Acetabulum What is the minute volume of a patient with a tidal volume of 500 mL, a dead space volume of 150 mL, and a respiratory rate of 16 breaths/min? a.) 5,600 mL b.) 6,000 mL c.) 7,200 mL d.) 8,000 mL Ans- 5,600 mL Which of the following is a function of the upper airway? a.) relaxes bronchiole smooth muscle b.) exchanges oxygen and caarbon dioxide c.) creates sound from vocal cord vibration d.) warms and humidifies inhaled air Ans- warms and humidifies inhaled air The topographic term used to describe the part of the body that is nearer to the feet is: a.) dorsal b.) inferior c.) internal d.) superior Ans- inferior The left side of the heart receives oxygenated blood from the lungs through the: a.) pulmonary veins b.) pulmonary arteries c.) inferior venae cavae d.) superior venae cavae Ans- pulmonary veins The diaphragm is a unique muscle because it: a.) is the exclusive muscle of breathing b.) does not receive impulses from the brain c.) is both a voluntary and involuntary muscle d.) does not have striations like skeletal muscle Ans- is both a voluntary and involuntary muscle The __________ fills the entire anteroposterior depth of the right upper quadrant (RUQ) of the abdomen. a.) liver b.) spleen c.) pancreas d.) stomach Ans- liver An intoxicated 40-year-old male s found lying face down. How would you document his body's position? a.) dorsal b.) supine c.) prone d.) recumbent Ans- prone Stimulation of the alpha-adrenergic receptors results in: a.) increased heart rate b.) dilation of the blood vessels c.) increased cardiac contractility d.) constriction of the blood vessels Ans- Constriction of blood vessels The bones of the forearm are called the:

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