Question.360 - Drag the terms on the left to the appropriate blanks on the right to complete the sentences. 1. The liquid portion of your blood is called?plasma. 2. Erythrocytes, also called?red blood cells, are packed with hemoglobin and transport oxygen to body tissues. 3. Leukocytes, also called?white blood cells, function in fighting infections. 4.?Platelets?are cell fragments involved in the process of blood clotting. 5. Within each red blood cell, the molecule?hemoglobin?is a protein that binds oxygen. A double circulatory system is composed of a ______________ circuit and a(n) ______________ circuit. systemic; capillary systemic; venous pulmonary; arterial pulmonary; systemic The three types of blood vessels are ________________. aorta, vena cava, and arteries capillaries, veins, and venulesarteries, capillaries, and arterioles arteries, capillaries, and veins ___________ carry blood from the heart, while ____________ carry blood to the heart. veins; venulesarteries; veins arteries; arterioles veins; arteries The pulmonary arteries carry _______________ blood. carbon dioxide-poor oxygen-rich oxygen-neutral oxygen-poor The aorta transports blood _________. from the lungs from the bodily tissues to the bodily tissues to the lungs Which of the following options correctly lists the sequence of structures that air passes through during breathing after it enters the mouth and nose? larynx, pharynx, trachea, bronchi, bronchioles, alveoli pharynx, larynx, trachea, bronchi, bronchioles, alveoli trachea, pharynx, larynx, bronchi, bronchioles, alveoli pharynx, larynx, trachea, bronchioles, bronchi, alveoli What is the specific site of gas exchange in the respiratory system? alveoli diaphragm bronchioles bronchi Contraction of the _____________ causes expansion of the lungs. diaphragm pharynx trachea alveoli The ____________ and the ____________ are commonly known as the voicebox and windpipe, respectively. pharynx; trachea trachea; larynx larynx; bronchi larynx; trachea Asthma causes constriction of the tiny air passages in the lungs, otherwise known as the __________. trachea bronchioles alveoli larynx Why does the post-Medieval skull in the video have such bad teeth? People stopped brushing their teeth after the Roman period. Diets during this time period were high in sugar. The bacteria in peoples mouths were becoming resistant to antibiotics. The skull is much older than the Roman skull. What is the direct cause of demineralization of the enamel on teeth? sugar in food food debris acids produced by bacteria plaque formed by bacteria saliva in the mouth What is the direct cause of gum disease? saliva in the mouth acids produced by bacteria plaque formed by bacteria sugar in food food debris Which of the following can increase your risk of atherosclerosis? avoiding high blood pressure avoiding sugary snacks avoiding cigarettes avoiding exercise avoiding a diet high in saturated fat Which of the following is true? Heart disease causes periodontal disease. Heart disease is caused by the presence of bacteria in the blood. There is a correlation between periodontal disease and heart disease. Periodontal disease causes heart disease. People who produce very little saliva often have more cavities. What is the best explanation for this? People who produce very little saliva cannot support the growth of beneficial bacteria in their mouths. Since saliva normally helps neutralize acid and replace minerals on teeth, a lack of saliva leads to more cavities. A lack of saliva can make the brushing of teeth uncomfortable, and reduced brushing leads to more cavities. People who produce very little saliva have trouble digesting proteins and fats, and tend to eat a diet high in sugar. Dentists sometimes give a patient antibiotics after a teeth-cleaning procedure, especially if the patient is older or has heart disease. What is the best explanation for this? The materials used during a teeth-cleaning procedure are high in low-density lipoproteins, and contribute to atherosclerosis. Teeth-cleaning procedures add bacteria to a persons mouth, and antibiotics are needed to control the bacteria. Antibiotics help kill the bacteria that move from the mouth to the bloodstream, and prevent the bacteria from contributing to atherosclerosis. Antibiotics help remove the plaque that remains on the teeth after a teeth-cleaning procedure.

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