Integumentary Study Guide

Anatomy + Physiology Test!

Hypodermis

Protection

Strata Lucidum

Extra protection for the palms of the hands and soles of the feet

Papillary Layer

Protection, where we get fingerprints from

Hair Papilla

3 Main functions: Protection, thermoregulation, and sensory

Arrector Pili Muscle

Raises the hairs when cold, nervous, or upset (goosebumps)

Sebaceous Glands

Collects dirt, waterproofs skin, softens skin and hair

Apocrine Glands

Sweats when stressed, has odor, not until after puberty

Eccrine Glands

"Real sweat" to thermoregulate

Keratinocytes

Toughens and protects the skin

Langerhan's Cells

Strengthens immune system

Melanocytes

Protects dermis from UV rays and pigments the skin (In Stratum Basale)

What is the layer in the epidermal strata with the dead cells?

Corneum (most superficial layer)

What is the extra layer of skin that protects the palms and soles?

Lucidum

What layer in the Epidermal Strata has granular cells?

Granulosum

What layer in the Epidermal Strata has kertinocytes?

Spinosum (second deepest layer)

What layer in the Epidermal Strata contains melanocytes and is the deepest layer?

Basale (deepest layer)

What gland is activated after puberty?

Apocrine Sweat Gland

What is responsible for light touch?

Meissner's Corpuscle

What is the receptor for light touch?

Tactile Merkle Cells

Where do we get out fingerprints from?

The Papillary Layer

What is responsible for goosebumps?

The Arrector Pili Muscle

Where is the oldest part of the hair shaft?

At the end of the hair shaft

What layers are in the dermis?

The Papillary Layer and the Reticular Layer