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Temperature regulation help the respiratory system keep homeostasis
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- A partial pressure gradient of oxygen exists between ________. a. air and lungs b. lungs and metabolically active tissues c. air at sea level and air at high altitudes d. all of the aboveThe respiratory system_______. a. provides body tissues with oxygen b. provides body tissues with oxygen and carbon dioxide c. establishes how many breaths are taken per minute d. provides the body with carbon dioxideWhen holding your breath, you must eventually exhale because: High levels of carbon dioxide are making your blood acidic You need more oxygen to drive cellular respiration You need oxygen to drive glycolysis Increased levels of carbon dioxide are making your blood basic None of the above
- Stimulation of the heat loss center causes what blood vessels in the skin to constrict breathing to become slower and shallow or sweat glands to increase their outputWhich of the following is true of the regulation of breathing in humans? Select all that apply. Check All That Apply The concentration of oxygen in the blood is the primary regulator of breathing rate. Breathing can be controlled consciously but is usually subconsciously controlled by the brain. A compound that lowers blood pH would increase respiration rate. Increased levels of blood carbon dioxide lead to an increase in bicarbonate production, which buffers the blood, making it harde oxygen to enter tissues. Respiration increases with the increased production of carbon dioxide during exercise.The human respiratory system functions in the following ways. Explain each: gas exchange sense of smell voice production body defenses acid-base balance temperature regulation
- If a respiratory pigment such as hemoglobin or hemocyanin is not present in blood the blood would not carry carbon dioxide the blood would have decreased oxygen carrying capacity the blood would not carry oxygenWhich of the following statements about oxygen transport is TRUE. Increases in temperature and decreases in pH cause myoglobin to release oxygen to improve delivery to the hemoglobin in muscles. A molecule of myoglobin has higher oxygen binding capacity than a molecule of hemoglobin. Myoglobin has a higher oxygen affinity than does hemoglobin. Fetal hemoglobin has a lower affinity for oxygen than maternal hemoglobin, which makes it better suited to extract oxygen from the maternal circulation.Which of the following is NOT a function of the respiratory system? Pathogen defense Synthesis of hormones Gas Exchange pH homeostasis Vocalization
- Which statement about the regulation of respiration is FALSE? Group of answer choices Respiratory centers in the medulla control the transition from inspiration to expiration. Carbon dioxide concentration is the most important chemical stimulus for regulating respiratory rate. Chemoreceptors in the walls of various arteries are sensitive to carbon dioxide levels in the blood. A group of neurons in the ventral medulla only become active when we need to breathe forcefully. Chemoreceptors may be sensitive to oxygen, carbon dioxide, and/or hydrogen ion concentration.The lungs perform other :physiologic functions Play secondary role in heat exchange and fluid balance of the body by warming the air we breathe in (inspire). All O Keeping the PH (acidity) of the blood constant. Exchange of O2 and CO2.Which of the following is NOT part of the respiratory membrane or respiratory epithelium ? Diaphragm Cuboidal epithelium with cilia Stratified squamous epithelium Capillary endothelium Red blood cell Fused basement membranes between the alveolar and endothelial cells