Integumentary system

Question 1

What is the structure of the integumentary system

Answer 1

The body’s outer layer
Skin weighs about 20 pounds
Another word for skin is integument

Question 2

what are the functions of the integumentary system

Answer 2

Tough keratin (a tough protein found in skin, hair, and nails) protects against mechanical injury and chemical damage
Melanocytes are cells that produce melanin to protect against UV ray damage
Acidic sweat protects against bacterial infections

Question 3

what is the water Barrier?

Answer 3

Keratin and oils in the skin reduce water loss through evaporation and form a barrier against water infusion.

Question 4

What is one more Function of the Integumentary system?

Answer 4

Temperature Regulation: Capillaries dilate to release heat and constrict to conserve heat. Sweat evaporation provides a cooling effect.

Question 5

What’s another function?

Answer 5

Vitamin D production: Sunlight converts cholesterol into vitamin D, which is essential for bone health.

Question 6

Whats the 3rd function?

Answer 6

Waste elimination: Urea and uric acid are eliminated in sweat

Question 7

What’s One More function?

Answer 7

Sensory Perception: Receptor cells transmit information about touch, pressure, vibration, pain, and temperature to the central nervous system

Question 8

whats the layer of the skin?

Answer 8

Epidermis
Dermis
Hypodermis

Question 9

What some factors about the epidermis?

Answer 9

The outer layer of the skin ,Composed of stratified epithelial cells,The epidermis does not contain a blood supply ,Contains Merkel cells- touch receptors

Question 10

what is the order of the epidermis layers

Answer 10

Stratum Corneum,Stratum Lucidum,Stratum Granulosum. Stratum Spinosum,Stratum Basale

Question 11

what are some facts about the skin color

Answer 11

Stratum Basale contains melanocytes that produce melanin,The amount of melanin produced is based on genetics, Exposure to sunlight causes melanocytes to produce more melanin

Question 12

What is Dermis structure and function

Answer 12

Contains two layers

Question 13

What is the Papillary layer?

Answer 13

contains capillaries and sensory receptors and take on a rigid pattern responsible for your fingerprint called dermal papillae.

Question 14

what is the Reticular layer?

Answer 14

includes blood and lymphatic vessels, sweat and oil glands, muscles, hair follicles, and nerve endings

Question 15

what do Meissner receptors do?

Answer 15

detect light touch

Question 16

what does the Pacinian corpuscle do?

Answer 16

detect deep pressure and vibrational change, Free nerve endings,respond to pain, light touch, and temperature variations

Question 17

what is Sudoriferous glands all about?

Answer 17

Distributed throughout the body with high concentration in under arms, palms and soles of feet, and the forehead

Question 18

what are Eccrine glands

Answer 18

cover most of the body. Sweat is clear that contains mostly water that opens directly onto the skin.

Question 19

what are Apocrine glands

Answer 19

Located on genitals and armpits. Secrete a milky fluid that secretes onto the hair follicles.

Question 20

where are Sebaceous Glands located

Answer 20

Located all over the body accept for palms of hands and soles of feet,Empty into hair follicles and directly on skin

Question 21

what is the function of Sebaceous Glands

Answer 21

Produce oily substance called sebum
Keep skin and hair soft and kill bacteria

Question 22

What is the Hair follicles structure

Answer 22

Bulb-shaped and with an arrector pili attached on either side

Question 23

What does Hair color do

Answer 23

Melanocytes in the follicle produce the pigment that gives hair its color. As a person ages, melanocytes produce less melanin turning hair gray or white.

Question 24

What does Hair texture do?

Answer 24

The shape of the hair follicle. A round follicle produces straight hair; a oval follicle produces wavy hair; and a flat-shaped follicle produces curly hair

Question 25

what are goosebumps

Answer 25

When cold or frightened the arrector pili muscles contract pulling the hair upright causing goosebumps. The erect hair traps a layer of air close to the skin, adding insulation to help warm the body

Question 26

what are 3 structures for Nails

Answer 26

Nail bed: located underneath the nail
Nail matrix: the thickened hard part of the nail. Are clear but appear pink due to the blood supply under the nail bed. This is where the nail grows
Lunule: the crescent portion located on top but located towards the bottom of the nail matrix

Question 27

What is Hypodermis

Answer 27

Made of adipose tissue
Source of energy
Padding and insulating the interior of the body
Connects skin to muscle