Which of the following represents a mismatch in stomach wall structure?

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The tongue
a. secretes saliva
b. plays a major role in swallowing
c. contains a lot of connective and lymphatic tissues
d. is attached to the hard palate
e. functions in deglutition apnea
Which of the following represents a mismatch in stomach wall structure?
a. muscularis – two layers; both circular
b. rugae – folds of mucosa and submucosa
c. mucosa – gastric glands
d. gastric pits – open onto surface of stomach mucosa
e. lining – simple columnar epithelium

Which of the following is a function performed by the digestive system?

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The diagram illustrates the major regulatory mechanisms of ventilation. What mechanism does “B” represent?
a. Hering-Breuer reflex
b. receptors for touch, temperature, pain stimuli
c. medullary chemoreceptors
d. carotid and aortic body chemoreceptors
e. proprioceptors
Which of the following is a function performed by the digestive system?
a. cellular respiration
b. food selection
c. elimination of undigested food
d. regulation of blood pH
e. integration and coordination of other systems

Most carbon dioxide is transported in the blood ?

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Arrange the following structures in the order air passes through them during inhalation:
1: alveolar ducts
2: alveolus
3: respiratory bronchiole
4: terminal bronchiole
a. 1, 2, 3, 4b. 2, 1, 3, 4c. 4, 3, 1, 2
d. 3, 2, 1, 4
e. 4, 3, 2, 1
Most carbon dioxide is transported in the blood
a. in the form of bicarbonate ions.
b. bound to carbamino compounds.
c. dissolved in the plasma.
d. by the leukocytes.
e. in the form of carbonic acid.

Ventilation refers to the?

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What does “A” represent on the diagram?
a. spleenb. thymusc. axillary lymph node
d. inguinal lymph node
e. thoracic duct
Ventilation refers to the
a. movement of air into and out of the lungsb. gas exchange between the blood and the tissuesc. transportation of oxygen and carbon dioxide in the blood
d. gas exchange between the air in the lungs and the blood
e. respiration at the cellular level