CH 7.1 - Skin and Its Appendages (Dermis, Hypodermis, & More!)

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The dermis is thicker than the epidermis and is composed of?

Connective tissue

This layer of the dermis is superficial.

Papillary

This layer of the dermis is richly vascular.

Reticular

The dermis’s papillary layer is made of what kind of tissue?

Ordinary loose connective tissue

The dermis’s reticular layer is made of what kind of tissue?

Dense irregular connective tissue

The dermis’s papillary layer forms what projections?

Conical

The dermis’s reticular layer contains what?

Cutaneous glands, hair follicles and associated muscles

The dermis’s papillary layer contains dermal papillae, which has what?

Capillary beds and numerous nerve endings

In the hypodermis, what binds skin to underlying tissue?

Loose connective tissue

The hypodermis contains numerous __________________?

Adipose cells

This is layers of adipose tissue in the hypodermis over some areas of the body, especially in over-nourished individuals.

Panniculus adiposus

Cutaneous glands and hair follicles may extend to?

Hypodermis

This appendage covers most of the body, and has protective and sensory functions.

Hair

Basic parts of the hair are?

Shaft and root

To form a hair follicle, the hair root is enclosed by?

Two epithelial sheaths

In a hair, the outermost layer is the?

Cuticle

In a hair, the middle layer is the?

Cortex

In a hair, the innermost layer is the?

Medulla

This hair growth period is active.

Anagen

This hair growth period is restful.

Telogen

This appendage is grows continuously, and is heavily keratinized.

Nail

Which nail layer acts as the stratum corneum?

Plate

Which nail layer acts as the stratum spinosum & germinativum?

Bed

Nail growth occurs here, which itself is like papilla.

Nail matrix

These are essentially appendages of hair; so they’re found in all areas with hair.

Sebaceous glands

Sebaceous gland ducts open into what part of the hair follicle?

Upper third

What kind of alveolar gland are sebaceous glands?

Simple branched

What do sebaceous glands produce?

Sebum

The product of sebaceous glands are made up of?

Lipids

Sebaceous glands are also known as?

Holocrine glands