Lesson 3.2: study questions integumentary system

Describe the anatomy behind a goosebump

Be anatomy behind a goosebump is that the individual muscles that control each hair follicle move and cause the hairs to stand up straight in an effort to conserve body heat

Fingernails and toenails are actually trans parent but a pair of pink. Why?

Fingernails and toenails are actually trans parent but appear pink because of the capillary supply beneath the stratum basale

Why does hair gray with age

Hair becomes gray with age because the melanocytes that are within the follicles produce less pigment

How does the skin continually renew itself

I sheds layers of dead skin from the epidermis

What substance determines your skin color?

Melanin

Four functions of the integumentary system

Protect the body, produce vitamin D, keep the in a homeostatic state, and sensations and feeling

Explain how a sweat develops an unpleasant odor

Sweat develops an unpleasant odor when bacteria chemically changes it on the surface of the skin

What happens to the collagen and elastic fibers during aging

The amount of collagen and elastic fibers decreased during aging

What are the benefits of sebum, the oil substance secreted through hair follicles and the skin

The benefits of sebum are that it keeps the hair and nail soft as well as containing chemicals that kill bacteria

Which skin structure allows the skin to sense and feel pressure, temperature, or pain and is part of another body system.

The cutaneous sensory receptors are receptors that transmit nerve signals that contain information about the environment including touch, pressure, vibration, pain, and temperature. They are also part of the nervous system

How many layers of tissue does the epidermis include?

The epidermis contains five layers of tissues

What is the function of the hypodermis

The function is to store fat, attach the skin, to the underlying tissues and to revive cushioning in insulation against external temperatures

Anatomy behind tanning

The longer you are in the sun the more melanin your melanocytes produce as well as more vitamin d is produced

What are the names of the layers of epidermis

The names of the layers of epidermis from superficial to deep are the stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum basale

How does the skin help to regulate body temperature

The skin helps to regulate body temperature by dilating and constricting capillaries to constrict and conserve heat as well as using the sudoriferous glands to produce sweat to help cook the body

What are the three shapes of hair follicles and how do the different shape follicles affect the nature of the hair

The three shapes of hair follicles are round, oval, and flat shaped. Round follicles produce straight hair, oval follicles produce wavy hair, and flat shaped follicles produce curly hair.

How many appendages of the skin are there and what are they called

There are four appendages of the skin and they are called the sudoriferous glands, sebaceous glands, hair, and nails

What kind of response do foreign bacteria or viruses stimulate in epidermal dendritic cells

They produce a aggressive response from the epidermal dendritic cells which brings in other specialized cells to attack the foreign