Digestive 1
Understanding the Digestive System
Welcome to the "Understanding the Digestive System" quiz! Test your knowledge on the intricate structures and fun
In this quiz, you will:
- Explore essential concepts about the digestive system.
- Challenge your understanding of anatomy related to digestion.
- Enhance your knowledge with scientifically accurate questions.
Each of the following statements concerning the alimentary canal mucosa is true, EXCEPT
Is a barrier separating the tract lumen from the body
Secretes digestive enzymes, hormones, mucus, and antibodies into the lumen
Selectively absorbs digested products
Lacks diffuse lymphatic tissue and lymphatic nodules
May contain glands
Each of the following statements concerning the muscularis externa of the alimentary canal is true, EXCEPT
Usually consists of three layers
Its muscle contractions produce peristalsis
The myenteric nerve plexus is present between muscle layers
Circular muscles form sphincters along the tract
Each of the following statements concerning the structure of the oral cavity organs is true, EXCEPT
Mucosa is covered with stratified epithelium
Epithelium is partially keratinized;
Mucosa possesses the muscularis mucosae
Submucosa is absent at many sites
Each of the following statements concerning the tooth is true, EXCEPT
Consists of three parts: the crown, neck, and root
Enamel covers all the tooth parts
Dentin is the principal tooth substance
The root is covered with cementum; E – contains the pulp chamber.
Each of the following statements concerning the tooth pulp is true, EXCEPT
Is filled with connective tissue
Contains blood vessels and nerves
The narrow canal extends from the pulp outside
Is lined with cementum.
Each of the following statements concerning the tooth development is true, EXCEPT:
The enamel organ cells induce odontoblast formation
Odontoblasts arise from the outer enamel epithelium
Odontoblasts produce dentin
Ameloblasts arise from the inner enamel epithelium
Each of the following statements concerning the tooth development is true, EXCEPT
Odontoblasts produce predentin
Predentin calcifies to become dentin
Dentin appears first, enamel and cementum are secreted later
The dental pulp arises from the enamel organ pulp
Each of the following statements concerning the myoepithelial cells is true, EXCEPT:
Are contractile cells
Are located only in the salivary gland acini
Possess numerous processes
Lie between the basal lamina and epithelial cells
Each of the following statements concerning the intercalated ducts of the salivary glands is true, EXCEPT
Are lined with columnar cells possessing basal striations
Secrete bicarbonate ions into the acinar product
Absorb chloride ions from the acinar product
Are short and difficult to identify in mucus salivary glands.
Each of the following statements concerning the esophageal glands is true, EXCEPT
Esophageal glands proper occur in the submucosa
Esophageal glands proper are compound tubuloalveolar ones
Produce serous secretion
Esophageal cardiac glands occur in the mucosal lamina propria
Each of the following statements concerning the esophageal muscularis externa is true, EXCEPT
Consists of two muscle layers;
Contains striated muscles in the upper third
Contains striated and smooth muscles in the middle third
Lacks myenteric plexus.
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