Concept explainers
Introduction:
Blood is a fluid connective tissue that circulates in the body to meet its nutritive and physiological needs. It comprises plasma and formed elements. Formed elements comprise various cellular and cellular fragments that are generated by the process of hematopoiesis, whereas the plasma mainly comprises water and plasma proteins.
Answer to Problem 1CYR
Correct answer:
The mast cell is not a formed element of the blood.
Explanation of Solution
Explanation for the correct answer:
Option (c) states that mast cell is not a formed element of the blood. A mast cell is a type of basophil (white blood cell) that differentiatesbetween tissues to perform its functions. Mast cells are the immune regulators of the body that secrete chemical substances to fight various infections and participate in allergic reactions. Hence, option (c) is correct.
Explanation for the incorrect answers:
Option (a) states that erythrocyte is not a formed element. Erythrocytes are suspended in the plasma of the blood. These are the red blood cells and area type of a formed element of the blood. So, it is an incorrect option.
Option (b) states that leukocyte is not a formed element. Leukocytes are white blood cells suspended in blood plasma and are a formed element of the blood. So, it is an incorrect option.
Option (d) states that platelet is not a formed element. Platelets are cell fragments found in blood and are a formed element of the blood. So, it is an incorrect option.
Hence, options (a), (b), and (d) are incorrect.
Therefore, it can be concluded that mast cells are not formed elements of the blood. They help in fighting against the infection.
Want to see more full solutions like this?
Chapter 19 Solutions
Human Anatomy & Physiology (2nd Edition)
- What are biofertilizers and mention the significancearrow_forwardPCBs and River Otters: Otters in Washington State’s Green-Duwamish River have high levels of polychlorinated biphenyls (PCBs) in their livers. PCBs can bind to the estrogen receptors in animals and disrupt the endocrine system of these otters. The PCBs seem to increase the estrogen to androgen ratio, skewing the ratio toward too much estrogen. How would increased estrogen affect the river otter population? Based on your reading of the materials in this unit, what factors can affect fertility in humans? Explain how each of the factors affecting human fertility that you described can disrupt the human endocrine system to affect reproduction.arrow_forwardOther than oil and alcohol, are there other liquids you could compare to water (that are liquid at room temperature)? How is water unique compared to these other liquids? What follow-up experiment would you like to do, and how would you relate it to your life?arrow_forward
- Selection of Traits What adaptations do scavengers have for locating and feeding on prey? What adaptations do predators have for capturing and consuming prey?arrow_forwardCompetition Between Species What natural processes limit populations from growing too large? What are some resources organisms can compete over in their natural habitat?arrow_forwardSpecies Interactions Explain how predators, prey and scavengers interact. Explain whether predators and scavengers are necessary or beneficial for an ecosystem.arrow_forward
- magine that you are conducting research on fruit type and seed dispersal. You submitted a paper to a peer-reviewed journal that addresses the factors that impact fruit type and seed dispersal mechanisms in plants of Central America. The editor of the journal communicates that your paper may be published if you make ‘minor revisions’ to the document. Describe two characteristics that you would expect in seeds that are dispersed by the wind. Contrast this with what you would expect for seeds that are gathered, buried or eaten by animals, and explain why they are different. (Editor’s note: Providing this information in your discussion will help readers to consider the significance of the research).arrow_forwardWhat is the difference between Uniporters, Symporters and Antiporters? Which of these are examples of active transport?arrow_forwardWhat are coupled transporters?arrow_forward
- Comprehensive Medical Assisting: Administrative a...NursingISBN:9781305964792Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy CorreaPublisher:Cengage Learning
- Medical Terminology for Health Professions, Spira...Health & NutritionISBN:9781305634350Author:Ann Ehrlich, Carol L. Schroeder, Laura Ehrlich, Katrina A. SchroederPublisher:Cengage Learning