Biology Illinois Edition (Glencoe Science)
7th Edition
ISBN: 9780078759864
Author: Alton Biggs
Publisher: MCG
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Chapter 32, Problem 12A
Summary Introduction
To explain:
It doesn’t hurt when a person has a haircut.
Introduction:
To define mammal hair is considered as a specific character of them. Hair is made up of keratin protein and it also contains melanin pigment. Hair is also considered as a part of the integumentary system.
Expert Solution & Answer
Explanation of Solution
Hair develops from epithelial cells. Hair cells grow from hair follicles which are the narrow cavities inside a dermis. Cells present at the base of hair follicles divide and push cells away from the follicle which results in the growth of hair. Sebaceous or oil glands are associated with the hair follicles. Skin and hair are lubricated by sebaceous glands. Cells that are divided and are pushed away from follicles become dead and didn’t have any nerve endings which can send stimulus to the brain that’s why it doesn’t hurt when a person has a haircut.
Conclusion
Hair has dead cells and doesn’t have any nerve ending which can send stimulus to the brain that’s why it doesn’t hurt when a person has a haircut.
Chapter 32 Solutions
Biology Illinois Edition (Glencoe Science)
Ch. 32 - Prob. 1ACh. 32 - Prob. 2ACh. 32 - Prob. 3ACh. 32 - Prob. 4ACh. 32 - Prob. 5ACh. 32 - Prob. 6ACh. 32 - Prob. 7ACh. 32 - Prob. 8ACh. 32 - Prob. 9ACh. 32 - Prob. 10A
Ch. 32 - Prob. 11ACh. 32 - Prob. 12ACh. 32 - Prob. 13ACh. 32 - Prob. 14ACh. 32 - Prob. 15ACh. 32 - Prob. 16ACh. 32 - Prob. 17ACh. 32 - Prob. 18ACh. 32 - Prob. 19ACh. 32 - Prob. 20ACh. 32 - Prob. 21ACh. 32 - Prob. 22ACh. 32 - Prob. 23ACh. 32 - Prob. 24ACh. 32 - Prob. 25ACh. 32 - Prob. 26ACh. 32 - Prob. 27ACh. 32 - Prob. 28ACh. 32 - Prob. 29ACh. 32 - Prob. 30ACh. 32 - Prob. 31ACh. 32 - Prob. 32ACh. 32 - Prob. 33ACh. 32 - Prob. 34ACh. 32 - Prob. 35ACh. 32 - Prob. 36ACh. 32 - Prob. 37ACh. 32 - Prob. 38ACh. 32 - Prob. 39ACh. 32 - Prob. 40ACh. 32 - Prob. 41ACh. 32 - Prob. 1STPCh. 32 - Prob. 2STPCh. 32 - Prob. 3STPCh. 32 - Prob. 4STPCh. 32 - Prob. 5STPCh. 32 - Prob. 6STPCh. 32 - Prob. 7STPCh. 32 - Prob. 8STPCh. 32 - Prob. 9STPCh. 32 - Prob. 10STPCh. 32 - Prob. 11STPCh. 32 - Prob. 12STPCh. 32 - Prob. 13STPCh. 32 - Prob. 14STPCh. 32 - Prob. 15STPCh. 32 - Prob. 16STPCh. 32 - Prob. 17STPCh. 32 - Prob. 18STP
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