ASU BIO 202 PENKROT EXAM 3 | COMPLETE QUESTIONS AND ANSWERS 2025-2026 LATEST
UPDATE 100% SOLVED
What layer's action is peristalsis? Muscularis externa:
inner circular layer
outer longitudinal layer
What provides most innervation of peristalsis of digestive tract? Myenteric plexus
What layer covers most of the digestive organs? Serosa/peritoneum
What is the enteric nervous system? A nervous network in the esophagus, stomach, and
intestines that regulated digestive tract motility, secretion, and blood flow.
The enteric nervous system functions completely independently of the central nervous system;
true or false. True
What do the mesenteries do? CT sheets that hold organs in place, prevent tanglement,
provide blood vessels, nerves, and lymph nodes/vessels.
What attaches the stomach to the liver? Lesser omentum
,The common bile duct travels through what? Lesser omentum
What covers the small and some of the large intestines like an apron? Greater omentum
What anchors the colon to the posterior body wall? Mesocolon
What reflexes are entirely contained within the neurons, within the digestive system itself and
stretch or stimulate chemical acts through the meyenteric plexus? Myenteric reflexes
What reflex is stimulated by the PNS and helps digestive motility and secretion? Vagovagal
What two hormones stimulate distant parts of the digestive tract? Gastrin and secretin
What are paracrine secretions? Chemical messengers that diffuse through the tissue fluids
to stimulate nearby target cells.
What starts the mechanical and chemical digestion of food? Oral cavity
Tongue is innervated by what two nerves that taste? Facial nerve, glossopharyngeal
What anchors the tooth firmly in alveolus and allows slight movement under pressure of
chewing? Periodontal ligament
, What is the hardest tissue in the body? Enamel
What two tissues of the teeth are living and can regenerate? Cementum and dentin
What is the main function of saliva? Chemically break down food.
What enzyme begins breaking down sugars (starch) in the mouth? Salivary amylase
What begins digestion of lipids in the mouth? Lingual lipase
When do proteins start breaking down? The stomach
What two things in the saliva prevent bacterial growth? Lysozymes and pH (6.8-7)
What gland gets infected when someone gets mumps? Parotid gland
What is the swallowing center of the brain? Medulla oblongata
Hoe does the medulla oblongata communicate with muscles of the pharynx and esophagus?
Trigeminal, facial, glossopharyngeal, and hypoglossal nerves.
UPDATE 100% SOLVED
What layer's action is peristalsis? Muscularis externa:
inner circular layer
outer longitudinal layer
What provides most innervation of peristalsis of digestive tract? Myenteric plexus
What layer covers most of the digestive organs? Serosa/peritoneum
What is the enteric nervous system? A nervous network in the esophagus, stomach, and
intestines that regulated digestive tract motility, secretion, and blood flow.
The enteric nervous system functions completely independently of the central nervous system;
true or false. True
What do the mesenteries do? CT sheets that hold organs in place, prevent tanglement,
provide blood vessels, nerves, and lymph nodes/vessels.
What attaches the stomach to the liver? Lesser omentum
,The common bile duct travels through what? Lesser omentum
What covers the small and some of the large intestines like an apron? Greater omentum
What anchors the colon to the posterior body wall? Mesocolon
What reflexes are entirely contained within the neurons, within the digestive system itself and
stretch or stimulate chemical acts through the meyenteric plexus? Myenteric reflexes
What reflex is stimulated by the PNS and helps digestive motility and secretion? Vagovagal
What two hormones stimulate distant parts of the digestive tract? Gastrin and secretin
What are paracrine secretions? Chemical messengers that diffuse through the tissue fluids
to stimulate nearby target cells.
What starts the mechanical and chemical digestion of food? Oral cavity
Tongue is innervated by what two nerves that taste? Facial nerve, glossopharyngeal
What anchors the tooth firmly in alveolus and allows slight movement under pressure of
chewing? Periodontal ligament
, What is the hardest tissue in the body? Enamel
What two tissues of the teeth are living and can regenerate? Cementum and dentin
What is the main function of saliva? Chemically break down food.
What enzyme begins breaking down sugars (starch) in the mouth? Salivary amylase
What begins digestion of lipids in the mouth? Lingual lipase
When do proteins start breaking down? The stomach
What two things in the saliva prevent bacterial growth? Lysozymes and pH (6.8-7)
What gland gets infected when someone gets mumps? Parotid gland
What is the swallowing center of the brain? Medulla oblongata
Hoe does the medulla oblongata communicate with muscles of the pharynx and esophagus?
Trigeminal, facial, glossopharyngeal, and hypoglossal nerves.
