Question 1

Which of the following statements about the cerebrospinal fluid is false?

Accepted Answer

A)  CSF is made by ependymal cells in the choroid plexuses 
B)  CSF is like plasma but with lower protein concentration 
C)  CSF is absorbed by the arachnoid villi 
D)  CSF circulates from the third to fourth ventricle through the cerebral aqueduct 
E)  CSF pressures hover at about 100-150 mm Hg 
A)  CSF is made by ependymal cells in the choroid plexuses 
B)  CSF is like plasma but with lower protein concentration 
C)  CSF is absorbed by the arachnoid villi 
D)  CSF circulates from the third to fourth ventricle through the cerebral aqueduct 
E)  CSF pressures hover at about 100-150 mm Hg E

Question 2

A gyrus in the brain is a

Accepted Answer

A)  Concentration of cell nuclei within the central nervous system 
B)  Concentration of cell nuclei within the peripheral nervous system 
C)  Valley in the folds of the brain cortex 
D)  Hill in the folds of the brain cortex 
E)  Concentration of axonal processes in the central nervous system 
A)  Concentration of cell nuclei within the central nervous system 
B)  Concentration of cell nuclei within the peripheral nervous system 
C)  Valley in the folds of the brain cortex 
D)  Hill in the folds of the brain cortex 
E)  Concentration of axonal processes in the central nervous system D

Question 3

Cranial nerves typically enter the brain

Accepted Answer

A)  In the frontal lobe 
B)  In the temporal lobe 
C)  In the brainstem 
D)  In the occipital lobe 
E)  In the thalamus 
A)  In the frontal lobe 
B)  In the temporal lobe 
C)  In the brainstem 
D)  In the occipital lobe 
E)  In the thalamus C

Question 4

Increased intracranial pressure is dangerous because it

Accepted Answer

A)  Reduces blood flow to critical areas of the brain 
B)  Reduces CSF volume 
C)  Increases CSF volume 
D)  Alters action potentials directly 
E)  Breaks the blood-brain barrier 
A)  Reduces blood flow to critical areas of the brain 
B)  Reduces CSF volume 
C)  Increases CSF volume 
D)  Alters action potentials directly 
E)  Breaks the blood-brain barrier

Question 5

The “blood brain barrier” refers to

Accepted Answer

A)  Lack of direct access of blood-borne substances to the brain’s interstitial fluid 
B)  High resistance to blood flow within the brain 
C)  Immunological cells in the brain that clean up the blood before it enters the brain 
D)  Low blood pressure in the brain due to it being higher than the heart 
E)  Inability of thoughts to be carried in the blood 
A)  Lack of direct access of blood-borne substances to the brain’s interstitial fluid 
B)  High resistance to blood flow within the brain 
C)  Immunological cells in the brain that clean up the blood before it enters the brain 
D)  Low blood pressure in the brain due to it being higher than the heart 
E)  Inability of thoughts to be carried in the blood

Question 6

W hich of the following is NOT part of the peripheral nervous system?

Accepted Answer

A)  Somatic afferents 
B)  Somatic efferents 
C)  Autonomic afferents 
D)  Autonomic efferents 
E)  Spinal cord 
A)  Somatic afferents 
B)  Somatic efferents 
C)  Autonomic afferents 
D)  Autonomic efferents 
E)  Spinal cord

Question 7

W hich of the following are NOT part of the brainstem?

Accepted Answer

A)  midbrain 
B)  medulla oblongata 
C)  hypothalamus 
D)  pons 
E)  they all belong to the brainstem 
A)  midbrain 
B)  medulla oblongata 
C)  hypothalamus 
D)  pons 
E)  they all belong to the brainstem

Question 8

CSF composition is

Accepted Answer

A)  high in Na, low in K and very low in protein 
B)  high in Na, low in K and like plasma with respect to protein 
C)  low in Na, high in K and very low in protein 
D)  Low in Na, high in K and like plasm a with respect to protein 
E)  Like interstitial fluid in general except the protein concentration is high 
A)  high in Na, low in K and very low in protein 
B)  high in Na, low in K and like plasma with respect to protein 
C)  low in Na, high in K and very low in protein 
D)  Low in Na, high in K and like plasm a with respect to protein 
E)  Like interstitial fluid in general except the protein concentration is high

Question 9

The central sulcus separates

Accepted Answer

A)  frontal lobe from temporal lobe 
B)  parietal lobe from occipital lobe 
C)  frontal lobe from parietal lobe 
D)  parietal lobe from temporal lobe 
E)  insular lobe from temporal lobe 
A)  frontal lobe from temporal lobe 
B)  parietal lobe from occipital lobe 
C)  frontal lobe from parietal lobe 
D)  parietal lobe from temporal lobe 
E)  insular lobe from temporal lobe

Question 10

Intracranial pressure is typically about

Accepted Answer

A)  1-5 mm Hg 
B)  10-15 mm Hg 
C)  30-45 mm Hg 
D)  60-75 mm Hg 
E)  100-150 mm Hg 
A)  1-5 mm Hg 
B)  10-15 mm Hg 
C)  30-45 mm Hg 
D)  60-75 mm Hg 
E)  100-150 mm Hg

Question 11

The total volume of the CSF is about

Accepted Answer

A)  3.5 mL 
B)  35 mL 
C)  135 mL 
D)  335 mL 
E)  1350 mL 
A)  3.5 mL 
B)  35 mL 
C)  135 mL 
D)  335 mL 
E)  1350 mL

Question 12

The brain is divided into two hemispheres by the

Accepted Answer

A)  Lateral fissure 
B)  Longitudinal fissure 
C)  Central sulcus 
D)  Sylvian sulcus 
E)  Corpus callosum 
A)  Lateral fissure 
B)  Longitudinal fissure 
C)  Central sulcus 
D)  Sylvian sulcus 
E)  Corpus callosum

Question 13

Which of the following is NOT one of the five lobes of the cerebrum

Accepted Answer

A)  Cingulate lobe 
B)  Occipital lobe 
C)  Temporal lobe 
D)  Insular lobe 
E)  Parietal lobe 
A)  Cingulate lobe 
B)  Occipital lobe 
C)  Temporal lobe 
D)  Insular lobe 
E)  Parietal lobe

Question 14

Ventricles in the brain are

Accepted Answer

A)  Chambers that pump blood when they contract 
B)  Hollow spaces within the brain that are filled with cerebrospinal fluid 
C)  Collections of nerve fibers (axons) 
D)  Collections of neuron cell bodies 
E)  Filled with intracellular fluid 
A)  Chambers that pump blood when they contract 
B)  Hollow spaces within the brain that are filled with cerebrospinal fluid 
C)  Collections of nerve fibers (axons) 
D)  Collections of neuron cell bodies 
E)  Filled with intracellular fluid

Exam 25: Organization of the Nervous System

Which of the following statements about the cerebrospinal fluid is false?

A gyrus in the brain is a

Cranial nerves typically enter the brain

Increased intracranial pressure is dangerous because it

The “blood brain barrier” refers to

W hich of the following is NOT part of the peripheral nervous system?

W hich of the following are NOT part of the brainstem?

CSF composition is

The central sulcus separates

Intracranial pressure is typically about

The total volume of the CSF is about

The brain is divided into two hemispheres by the

Which of the following is NOT one of the five lobes of the cerebrum

Ventricles in the brain are

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

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

Intestinal and Colonic Motility

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