Question 1

Increased diffuse colonic activity after eating a meal is called the

Accepted Answer

A)  Enterogastric excitatory reflex 
B)  Enterogastric inhibitory reflex 
C)  Ileal brake 
D)  Gastrocolic reflex 
E)  Gastoileal reflex 
A)  Enterogastric excitatory reflex 
B)  Enterogastric inhibitory reflex 
C)  Ileal brake 
D)  Gastrocolic reflex 
E)  Gastoileal reflex

Question 2

Increased colonic motility following a meal is the result of the

Accepted Answer

A)  Gastrocolic reflex 
B)  Gastroileal reflex 
C)  Gastric accomm odation 
D)  Enterogastric inhibitory reflex 
E)  Receptive relaxation 
A)  Gastrocolic reflex 
B)  Gastroileal reflex 
C)  Gastric accomm odation 
D)  Enterogastric inhibitory reflex 
E)  Receptive relaxation

Question 3

W hich of the following statements about segmentation contactions is NOT true?

Accepted Answer

A)  Segmentation contractions move food surfaces around for digestion and absorption 
B)  Segmentation contractions mix food with digestive juices 
C)  Segmentation contractions move material both caudad and orad 
D)  Segmentation contractions are more frequent in the distal small intestine 
E)  Segmentation contractions occur only in the digestive period 
A)  Segmentation contractions move food surfaces around for digestion and absorption 
B)  Segmentation contractions mix food with digestive juices 
C)  Segmentation contractions move material both caudad and orad 
D)  Segmentation contractions are more frequent in the distal small intestine 
E)  Segmentation contractions occur only in the digestive period

Question 4

Preganglionic parasympathetic nerves in the small intestine release

Accepted Answer

A)  Acetylcholine onto muscle cells 
B)  Acetylcholine onto neurons in the myenteric plexus 
C)  Norepinephrine onto muscle cells 
D)  Norepinephrine onto neurons in the myenteric plexus 
E)  VIP and NO onto m uscle cells 
A)  Acetylcholine onto muscle cells 
B)  Acetylcholine onto neurons in the myenteric plexus 
C)  Norepinephrine onto muscle cells 
D)  Norepinephrine onto neurons in the myenteric plexus 
E)  VIP and NO onto m uscle cells

Question 5

Nutrients in the terminal ileum

Accepted Answer

A)  Inhibit gastric emptying in a reflex called the ileal brake 
B)  Inhibit ileal motility 
C)  Close the ileocecal valve 
D)  Stimulate colonic motility 
E)  Stimulate duodenal peristalsis 
A)  Inhibit gastric emptying in a reflex called the ileal brake 
B)  Inhibit ileal motility 
C)  Close the ileocecal valve 
D)  Stimulate colonic motility 
E)  Stimulate duodenal peristalsis

Question 6

In the descending relaxation

Accepted Answer

A)  Longitudinal muscle relax orad, circular muscles contract orad 
B)  Longitudinal muscles contract orad, circular muscles relax orad 
C)  Longitudinal muscles contract caudad, circular muscles relax caudad 
D)  Longitudinal muscles relax both caudad and orad 
E)  A and C are correct 
A)  Longitudinal muscle relax orad, circular muscles contract orad 
B)  Longitudinal muscles contract orad, circular muscles relax orad 
C)  Longitudinal muscles contract caudad, circular muscles relax caudad 
D)  Longitudinal muscles relax both caudad and orad 
E)  A and C are correct

Question 7

Relaxation of the internal anal sphincter is caused by

Accepted Answer

A)  Nutrients in the ileum 
B)  Stretch of the ascending colon 
C)  Stretch of the ileum 
D)  Stretch of the stomach 
E)  Stretch of the sigmoid colon and rectum 
A)  Nutrients in the ileum 
B)  Stretch of the ascending colon 
C)  Stretch of the ileum 
D)  Stretch of the stomach 
E)  Stretch of the sigmoid colon and rectum

Question 8

The duodenum

Accepted Answer

A)  Is the first part of the small intestine from the pyrloric sphincter to the suspensory ligament,about 20 cm 
B)  Connects the stomach to the ileum 
C)  Connects the ileium to the colon 
D)  Is the middle part of the small intestine, about 40% of the length of the small intestine 
E)  Is the last part of the small intestine, about 60% of the length of the small intestine 
A)  Is the first part of the small intestine from the pyrloric sphincter to the suspensory ligament,about 20 cm 
B)  Connects the stomach to the ileum 
C)  Connects the ileium to the colon 
D)  Is the middle part of the small intestine, about 40% of the length of the small intestine 
E)  Is the last part of the small intestine, about 60% of the length of the small intestine

Question 9

The external anal sphincter is controlled by

Accepted Answer

A)  Reflexes from stretch of the sigmoid colon mediated by the parasympathetic nerve 
B)  Involuntary reflexes carried over the pelvic nerve 
C)  Somatic motor neurons from sacral segments carried in the pudendal nerve 
D)  Sympathetic nerves from T10-L2 over the hypogastric nerve 
E)  Involuntary reflexes carried over the pudendal nerve 
A)  Reflexes from stretch of the sigmoid colon mediated by the parasympathetic nerve 
B)  Involuntary reflexes carried over the pelvic nerve 
C)  Somatic motor neurons from sacral segments carried in the pudendal nerve 
D)  Sympathetic nerves from T10-L2 over the hypogastric nerve 
E)  Involuntary reflexes carried over the pudendal nerve

Exam 57: Intestinal and Colonic Motility

Increased diffuse colonic activity after eating a meal is called the

Increased colonic motility following a meal is the result of the

W hich of the following statements about segmentation contactions is NOT true?

Preganglionic parasympathetic nerves in the small intestine release

Nutrients in the terminal ileum

In the descending relaxation

Relaxation of the internal anal sphincter is caused by

The duodenum

The external anal sphincter is controlled by

Physical Foundations Ii: Electrical Force Potential Capacitance and Current

Chemical Foundations I: Chemical Energy and Intermolecular Forces

Chemical Foundations Ii: Concentration and Kinetics

Diffusion

Electrochemical Potential and Free Energy

Cell Structure

Dna and Protein Synthesis

Protein Structure

Biological Membranes

Passive Transport and Facilitated Diffusion

Active Transport: Pumps and Exchangers

Osmosis and Osmotic Pressure

Cell Signaling

ATP Production I: Glycolysis

Atp Production Ii: Tca Cycle and Oxidative Phosphorylation

Atp Production Iii: Fatty Acid Oxidation and Amino Acid Oxidation

Origin of the Membrane Potential

The Action Potential

Propagation of the Action Potential

Skeletal Muscle Mechanics

Contractile Mechanisms in Skeletal Muscle

Neuromuscular Junction and Ec Coupling

Muscle Energetics Fatigue and Training

Smooth Muscle

Organization of the Nervous System

Cells Synapses and Neurotransmitters

Cutaneous Sensory Systems

Spinal Reflexes

Balance and Control of Movement

the Chemical Senses

Hearing

Vision

Autonomic Nervous System

Overview of the Cv System and Blood

Plasma and Red Blood Cells

White Blood Cells and Inflammation

The Heart As a Pump

Cellular Basis of Cardiac Contractility

the Cardiac Function Curve

Vascular Function: Hemodynamics

Microcirculation and Solute Exchange

Regulation of Perfusion

Integration of Cardiac Output and Venous Return

Regulation of Arterial Pressure

Mechanics of Breathing

Lung Volumes and Airway Resistance

Gas Exchange in the Lung

Oxygen and Carbon Dioxide Transport

Acid Base Physiology I Bicarbonate Buffers and Respiratory Compensation

Control of Ventilation

Anatomy and Renal Overview

Glomerular Filtration

Tubular Reabsorption and Secretion

Concentration and Dilution of Urine

Mouth and Esophagus

The Stomach

Pancreatic and Biliary Secretion

Digestion and Absorption of the Macronutrients

Energy Balance and Regulation of Food Intake

General Principles of Endocrinology

Hypothalamus and Pituitary Gland

The Thyroid Gland

The Endocrine Pancreas

The Adrenal Cortex

The Adrenal Medulla

The Calcitropic Hormones

Calcium and Phosphorus Homeostasis Ii

Female Reproductive Physiology

Filters