Ch5.1 Dermis, Hypodermis & Sensory Receptors

apocrine sweat gland

type of sweat gland that is associated with hair follicles in the armpits and genital regions

dermal papilla

extension of the papillary layer of the dermis that increases surface contact between the epidermis and dermis

dermis

layer of skin between the epidermis and hypodermis, composed mainly of connective tissue and containing blood vessels, hair follicles, sweat glands, and other structures

eccrine sweat gland

type of sweat gland that is common throughout the skin surface; it produces a hypotonic sweat for thermoregulation

elastin fibers

fibers made of the protein elastin that increase the elasticity of the dermis

hypodermis

connective tissue connecting the integument to the underlying bone and muscle

integumentary system

skin and its accessory structures

Meissner corpuscle

(also, tactile corpuscle) receptor in the skin that responds to light touch

Pacinian corpuscle

(also, lamellated corpuscle) receptor in the skin that responds to vibration

papillary layer

superficial layer of the dermis, made of loose, areolar connective tissue

reticular layer

deeper layer of the dermis; it has a reticulated appearance due to the presence of abundant collagen and elastin fibers

sebaceous gland

type of oil gland found in the dermis all over the body and helps to lubricate and waterproof the skin and hair by secreting sebum

sebum

oily substance that is composed of a mixture of lipids that lubricates the skin and hair

sudoriferous gland

sweat gland

vitamin D

compound that aids absorption of calcium and phosphates in the intestine to improve bone health