Manufacturers of shampoos and conditioners often claim their products contain vitamins that are necessary to keep hair shafts healthy. Do hair shafts need vitamins?

Q: Discuss the function of melanin, other than providing color to the skin.

A: Melanin is a natural pigment produced by specialized cells known as melanocyte cells through a…

Q: Describe what happens in the anagen, catagen, andtelogen phases of the hair cycle

A: The hair follicle is an organ found in the mammalian skin. It resides in the dermal layer of the…

Q: How do folate, vitamin D, and uv intensity affect the skin color? Explain.

A: The colour of human skin varies from the darkest brown to the lightest shades. Variation in…

Q: How does a hair grow in length?

A: Hair is a keratinous filament growing out of the epidermis. Just as the basal layer of the epidermis…

Q: List and discuss the three zones along the length of a hair.

A: Hair is one of the important features of mammals. It is a filament made of keratin protein. It…

Q: All of the following regarding the hair growth cycle and hair shedding are true EXCEPT that each…

A: Hair develops from the follicle, or root, under the skin. The hair is 'taken care of' by veins at…

Q: What are the differences in the length of hair growth cycles between the hair of the head and the…

A: The hair growth cycle has 3 stages, namely, anagen, catagen, and telogen. Anagen phase marks the…

Q: Explain how environmental factors affect skin color.

A: The skin forms the largest organ in the body. It comprises of two layers epidermis and dermis. The…

Q: A person who has been playing in the snow notices that their fingertips are very pale. why?

A: Blood is the major body fluid of our body that aids in the transportation of nutrients and…

Q: State the functions of the hair papilla, hair receptors, andpiloerector.

A: KEYWORDS :- Piloerection - It occurs when sudden cold currents or fright occurs suddenly our hair…

Q: Describe the three regions of a hair from its base to its tip, and the three layers of a hair seen…

A: A cell is a structural and functional unit of life. The structure and function of a cell have been…

Q: How does the function of melanin explain not only the variety of skin colors but susceptibility to…

A: Melanin produced by the melanocytes is the major determinant of skin color in majority of the…

Q: Hair contains keratinized cells, which are found in thea. cuticle layer.b. cortex.c. medulla.

A: The hair appears from the hair follicle and develops using a massive cell division mechanism in the…

Q: What are the concentric regions of a hair shaft, from the outside in?

A: The hair shaft is the hair segment that is not connected to the follicle, much of which is found on…

Q: How is sunlight important to bone health?

A: The sunlight, which is considered to be the main source of energy for all living organism, also…

Q: If a burn on the forearm destroys the epidermis and the deep dermis and then heals, will hair grow…

A: A burn is a kind of damage to the skin or other tissues. Burns are caused by the exposure of the…

Q: What is Hair and its composition?

A: The body has numerous anatomical structures to help with the mechanism of protecting the body from…

Q: Why is having your hair cut painless?

A: The reason why it is painless when we cut the hair is because: it is composed of dead cells. it is…

Q: How does the hair in our skin relate to its functions of protection, temperature control, waste…

A: * we all know that our body skin had small hairs on it which will protect and control temperature…

Q: An arrector pili muscle (a) is associated with each sweat gland, (b) causes the hair to stand up…

A: The arrector pili is a gang of muscle tissue that attaches a follicular unit to the…

Q: Identify the accessory structure of the skin indicated by the arrow: O hair root O hair bulb O hair…

A: Hair develops from the follicle. This is situated at the intersection of the deep dermis and the…

Q: When Anthony returned home from a run in 85°F weather, his face was dripping with sweat. Why?

A: Anthony returns home after running in 85°F which means the temperature was somewhere around 29.44°C…

Q: What is the function of outer hair cells? Inner hair cells?

A: The sensory cell of the auditory and vestibular systems are known as hair cells. These are the…

Q: Describe the processes that produce hair and the structural basis for hair texture and color.

A: A hair or hair follicle is a filament made up of keratin that grows out of the skin's epidermis.…

Q: Distinguish between a hair and a hair follicle.

A: Hair is a filamentous protein found on the surface of human and animal skin. It is made up of…

Q: How do systemic disorders affect nail and hair growth?

A: The hair and nails develop from a matrix. The hair turns into hair follicles and considering the…

Q: What are the three pigments in the skin and how do they contribute to skin color?

A: The three pigments in the skin are : Carotene , Hemoglobin and Melanin

Q: What pigments are responsible for skin color?

A: We know that The skin color of humans is affected by many different substances. There are three…

Q: Explain how hair protects your body.

A: HAIR : hair is a protein filament that grows from follicles found in the dermis . Hair is one of the…

Q: In some cultures, women must be covered completely, except for their eyes, when they go outside.…

A: A specific quantity of ultraviolet radiation (UVB) must enter the body's outer skin layer to…

Q: which layer of the dermis helps to prevent friction from occurring between the epidermis and dermis…

A: Connective tissue, blood arteries, oil and sweat glands, nerves, hair follicles, and other…