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College Respiration, Digestion, and Excretion Questions

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College Respiration, Digestion, and Excretion
Carbohydrate digestion begins in the                         , whereas protein digestion begins in the                         .
  1. liver, small intestine
  2. small intestine, stomach
  3. mouth, stomach
  4. mouth, small intestine
  5. stomach, small intestine
College Respiration, Digestion, and Excretion
Most carbon dioxide is carried from the body tissues to the lungs                             .
  1. as bicarbonate ions (HCO3 -)
  2. combined with hemoglobin
  3. by the trachea
  4. as hydrogen ions (H+)
  5. dissolved in blood plasma
College Respiration, Digestion, and Excretion
Which of these occurs when ingested material is physically broken down into smaller units by chewing and mixing without changing their chemical structure?
  1. ingestion
  2. digestion
  3. mechanical digestion
  4. chemical digestion
College Respiration, Digestion, and Excretion
Which of these involves specific enzymes to break chemical bonds to change larger complex molecules into smaller molecules that can be absorbed?
  1. chemical digestion
  2. mechanical digestion
  3. digestion
  4. motility
College Respiration, Digestion, and Excretion
The "nephron" is a functional unit of the                  .
  1. Penis
  2. Liver
  3. Kidney
  4. None of the above
College Respiration, Digestion, and Excretion
The body system which regulates the chemical composition of blood, eliminates many waste products, and maintains the fluid balance and volume in the body is the
  1. Digestive system
  2. Urinary system
  3. Respiratory system
  4. Circulatory system
College Respiration, Digestion, and Excretion
Pulmonary ventilation is the                                                .
  1. exchange of gases between the blood & the cells
  2. exchange of gases between the lungs & the blood
  3. inspiration & expiration
  4. None
College Respiration, Digestion, and Excretion
The starch-digesting enzymes of the saliva and pancreatic juice are called                .
  1. amylases
  2. peptidases
  3. lipases
  4. lysozymes
  5. upsy daisies
College Respiration, Digestion, and Excretion
What are the main functions of the urinary system?
  1. regulation of water and electrolyte balance, only
  2. regulation of water balance and blood glucose level
  3. removal of waste and regulation of water and electrolyte balance
  4. removal of waste and storage of nutrients
College Respiration, Digestion, and Excretion
Which of the following is not an accessory organ of digestion?
  1. tongue
  2. liver
  3. pancreas
  4. salivary glands
  5. spleen
College Respiration, Digestion, and Excretion
The wavelike muscular contractions of the gastrointestinal tract are called                .
  1. peristalsis
  2. segmentation
  3. deglutition
  4. mastication
College Respiration, Digestion, and Excretion
Which of the following structures is not a part of the respiratory system?
  1. Heart
  2. Lungs
  3. Larynx
  4. Trachea
College Respiration, Digestion, and Excretion
Which organ transports urine from urinary bladder to outside the body?
  1. kidney
  2. ureter
  3. urethra
  4. urinary bladder
College Respiration, Digestion, and Excretion
The stomach churns food into a pasty material called                .
  1. a bolus
  2. chyme
  3. chyle
  4. saliva
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