Concept explainers
To test your knowledge, discuss the following topics with a study partner or in writing ideally from memory.
21.1 General Anatomy of the Blood Vessels
1. The meaning of arteries, capillaries, and veins with respect to the route of blood flow from and back to the heart

To analyze:
The meaning of arteries, capillaries, and veins.
Introduction:
The blood vessels are part of the circulatory system that carries blood all over the human body. There are three main categories of blood vessels- arteries, veins, and capillaries.
Explanation of Solution
Arteries are defined as the efferent vessels of the cardiovascular system that carry blood from the heart to the tissues. The arteries carry oxygen-rich blood to the body and the pulmonary artery carries oxygen-deficient blood to the lungs. They branch many times and get smaller as they bring blood from the heart to the organs.
Veins are defined as the afferent vessels which return blood to the heart. Blood in the veins contains less oxygen and is rich in waste products that need to be expelled from the body, exception is the pulmonary vein that carries oxygen-rich blood from the lungs to the heart. They become larger when they get closer to the heart.
Capillaries are thin-walled, microscopic vessels that connect arteries with the veins. They allow carbon dioxide, oxygen, nutrients and other waste products to pass from the cells.
Arteries, veins, and capillaries are the three main categories of blood vessels that transport blood cells, oxygen, and nutrients to the tissues and carry carbon dioxide and waste products away from the tissues.
Want to see more full solutions like this?
Chapter 21 Solutions
ACCESS CODE+EBOOK HUMAN ANATOMY
Additional Science Textbook Solutions
Biology: Life on Earth with Physiology (11th Edition)
Microbiology Fundamentals: A Clinical Approach
Human Physiology: An Integrated Approach (8th Edition)
Chemistry & Chemical Reactivity
Genetics: From Genes to Genomes
- What did the Cre-lox system used in the Kikuchi et al. 2010 heart regeneration experiment allow researchers to investigate? What was the purpose of the cmlc2 promoter? What is CreER and why was it used in this experiment? If constitutively active Cre was driven by the cmlc2 promoter, rather than an inducible CreER system, what color would you expect new cardiomyocytes in the regenerated area to be no matter what? Why?arrow_forwardWhat kind of organ size regulation is occurring when you graft multiple organs into a mouse and the graft weight stays the same?arrow_forwardWhat is the concept "calories consumed must equal calories burned" in regrads to nutrition?arrow_forward
- You intend to insert patched dominant negative DNA into the left half of the neural tube of a chick. 1) Which side of the neural tube would you put the positive electrode to ensure that the DNA ends up on the left side? 2) What would be the internal (within the embryo) control for this experiment? 3) How can you be sure that the electroporation method itself is not impacting the embryo? 4) What would you do to ensure that the electroporation is working? How can you tell?arrow_forwardDescribe a method to document the diffusion path and gradient of Sonic Hedgehog through the chicken embryo. If modifying the protein, what is one thing you have to consider in regards to maintaining the protein’s function?arrow_forwardThe following table is from Kumar et. al. Highly Selective Dopamine D3 Receptor (DR) Antagonists and Partial Agonists Based on Eticlopride and the D3R Crystal Structure: New Leads for Opioid Dependence Treatment. J. Med Chem 2016.arrow_forward
- The following figure is from Caterina et al. The capsaicin receptor: a heat activated ion channel in the pain pathway. Nature, 1997. Black boxes indicate capsaicin, white circles indicate resinferatoxin. You are a chef in a fancy new science-themed restaurant. You have a recipe that calls for 1 teaspoon of resinferatoxin, but you feel uncomfortable serving foods with "toxins" in them. How much capsaicin could you substitute instead?arrow_forwardWhat protein is necessary for packaging acetylcholine into synaptic vesicles?arrow_forward1. Match each vocabulary term to its best descriptor A. affinity B. efficacy C. inert D. mimic E. how drugs move through body F. how drugs bind Kd Bmax Agonist Antagonist Pharmacokinetics Pharmacodynamicsarrow_forward
- Medical Terminology for Health Professions, Spira...Health & NutritionISBN:9781305634350Author:Ann Ehrlich, Carol L. Schroeder, Laura Ehrlich, Katrina A. SchroederPublisher:Cengage LearningBasic Clinical Lab Competencies for Respiratory C...NursingISBN:9781285244662Author:WhitePublisher:Cengage
