Quiz sobre Células del Estómago

What percentage of the stomach is covered by oxínticas (gastric) cells?

• 50%

• 80%

• 20%

• 100%

Which of the following is secreted by oxínticas cells?

• Gastrina

• Mucus

• HCL

• Pepsina

Where are pilóricas cells located in the stomach?

• Antrum

• Fundus

• Body

• Cardia

What is the role of pepsinogen secreted by pilóricas cells?

• Neutralize acid

• Precursor of pepsin

• Stimulate mucus production

• Regulate blood flow

What is stimulated by the parasympathetic system during the cephalic phase?

• Production of pepsin and acid

• Production of insulin

• Production of bile

• Production of saliva

Which phase involves local nervous secretory reflexes?

• Gastric phase

• Cephalic phase

• Intestinal phase

• Absorptive phase

What is the role of gastrin in the digestive process?

• Stimulates histamine

• Inhibits acid production

• Stimulates bile production

• Inhibits pepsin production

What is the origin of neurogenic signals in the cephalic phase?

• Cerebral cortex, amygdala, and hypothalamus

• Spinal cord and medulla oblongata

• Cerebellum and thalamus

• Pituitary gland and pineal gland

What percentage of gastric secretion occurs during the cephalic phase?

• 10%

• 20%

• 30%

• 40%

What triggers the gastric phase in the digestive process?

• Presence of food in the mouth

• Distension in the stomach walls and presence of food

• Absence of food in the stomach

• Presence of food in the intestines