KIN 1AA3 TEST 5 W2024

Which of the following is false about the layers of the GI tract?

• The myenteric plexus is located between the circular muscle and the submucosa

• The upper/middle esophagus contains skeletal muscle in the muscularis layer

• The serosa is the outermost layer of the esophagus

• The serosa layer is considered to be the visceral peritoneum of the GI tract

• Two of the above

Which of the following peritoneal folds is correctly matched?

• Mesocolon - transverse colon to anterior abdominal wall

• Greater omentum - stomach to transverse colon

• Lesser omentum - stomach to pancreas

• Falciform ligament - liver to superior portion of the diaphragm

Which of the following is false about the oral cavity?

• Molars have 4 cusps while premolars have 2 cusps

• Babies who are born tongue-tied have a shortened labial frenulum

• The gingiva lines the alveolar process of the maxilla and mandible

• The oral vestibule defines the space outside the oral proper

Select the true statement about the extrinsic muscles of the tongue.

• The extrinsic muscles insert onto bony features and have their origin at the tongue

• The extrinsic muscles are involved in manipulating the shape of the tongue

• The hyoglossus elevates the back of the tongue when contracted

• The genioglossus controls anterior movement of the tongue

Select the areas of the tooth that contain enamel.

• Crown

• Neck

• Root

• All of the above

Which of the following glands is correctly matched with the location of its duct?

• Sublingual: roof of the mouth

• Submandibular: region near the lingual frenulum

• Parotid gland: region of the second premolar

• All of the above are correctly matched

Which of the following is not associated with increased salivation?

• Stimulation of cranial nerve VII

• Cerebral cortex mediated salivation in response to memories of food

• Stimulation of cranial nerve X

• Parasympathetic stimulation

Which of the following enzymes is deactivated once it reaches the stomach?

• Salivary amylase

• Lingual lipase

• Gastric lipase

• Pepsin

Which of the following is false about the histology of the esophagus?

• The mucosa is lined with stratified squamous epithelial cells

• At the terminal end, there are more mucous glands

• The middle region contains both skeletal and smooth muscle

• The adventitia is the outermost layer and consists of adipose connective tissue

Which of the following events is not included in the involuntary stages of deglutition?

• The bolus enters the esophagus

• The soft palate is lifted to block off the nasopharynx

• The bolus is pushed into the oropharynx

• Sensory nerves send signals to the deglutition center in the medulla oblongata + pons