Ch. 22 - Introduction to the Immune SystemSee all chapters
All Chapters
Ch. 1 - Introduction to Physiology
Ch. 2 - Molecules and Molecular Interactions
Ch. 3 - Cells and Tissues
Ch. 4 - Cell Metabolism: Bioenergetics, Enzymes, and Respiration
Ch. 5 - Membrane Dynamics
Ch. 6 - Cell Communication
Ch. 7 - Integumentary System
Ch. 8 - Bone and Cartilage
Ch. 9 - Skeletal System
Ch. 10 - Joints
Ch. 11 - Muscles
Ch. 12 - The Nervous System I: Neurons and Neuronal Networks
Ch. 13 - The Nervous System II: The Central Nervous System
Ch. 14 - The Autonomic Nervous System
Ch. 15 - Sensory Physiology
Ch. 16 - The Endocrine System
Ch. 17 - Cardiovascular Physiology I: The Heart
Ch. 18 - Cardiovascular Physiology II: Blood, Blood Vessels, Circulation, and Exchange
Ch. 19 - The Urinary System
Ch. 20 - Respiratory Physiology
Ch. 21 - Acid-Base Balance-- Controlling Blood pH
Ch. 22 - Introduction to the Immune System
Ch. 23 The Lymphatic System
Ch. 23 - The Digestive System
Ch. 24 - Regulation of Metabolism and Energy Balance
Ch. 25 - Human Sexual Reproduction and Development

Concept #1: Intro to T and B Cells

Concept #2: The T- and B-Cell Receptors

Concept #3: Clonal Selection and Clonal Expansion

Practice: An immunologist, as part of a research project, takes blood from a healthy, normal 21-year-old undergraduate student and separates out the B cells. The student has not had any illnesses recently. Which of the following accurately describes the B cell receptors (BCRs) on the B cells collected from the student?

Practice: An immunologist, as part of a research project, takes blood from a healthy, normal 21-year-old undergraduate student and separates out the B cells. The student just recovered from a bout of influenza (she just started feeling better yesterday). Which of the following accurately describes the B cell receptors (BCRs) on the B cells collected from the student?

Practice: A 10-year-old boy presents to his pediatrician in January with a 3-day history of fever, sore throat, cough, and body aches. His mother reports that three other kids in his class have had the same symptoms. The boy has not had any vaccinations for the last 3 years.

The doctor diagnoses influenza, a disease caused by a virus that the boy’s immune system has never seen before. Five days later the boy has fully recovered. Which of the following cell types primarily mediated this boy’s recovery this week? 

Practice: Six other children in the boy’s class get sick with similar symptoms over the coming month. Although the boy plays Yu-Gi-Oh! with them at recess while they’re sick, he does not get sick again. Which of the following cell types primarily protected the boy from becoming sick a second time?