Ch. 18 - Cardiovascular Physiology II: Blood, Blood Vessels, Circulation, and ExchangeWorksheetSee 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: Ohm's Law for Blood Flow

Concept #2: Poiseuille's Law and Resistance to Flow

Practice: Epinephrine is a hormone that binds to α1 adrenergic receptors on smooth muscle cells in the walls of blood vessels. Binding of epinephrine to α1 receptors activates an intracellular signaling cascade whose end effect is to cause contraction of the smooth muscle and, thus, constriction of the blood vessel. Which of the following correctly identifies the variable in Poiseuille’s Law that will be directly affected by epinephrine binding to α1 receptors and the resulting effect on blood flow through the affected vessels?

Practice: Erythropoietin is a hormone that causes an increase in the production and release of red blood cells from the bone marrow. Which of the following correctly identifies the variable in Poiseuille’s Law that will be directly affected by an erythropoietin-mediated increase in red blood cell volume and the resulting effect on blood flow through the affected vessels?