BIOL 223 - Chapter 5-2

List the two layers of the cutaneous membrane.

The epidermis is comprised of what type of tissue?

The dermis is comprised of what two types of tissue?

List the five major types of cell found in the epidermis.

What is the function of melanocytes?

What is the function of the langerhans cell?

What are lamellar bodies full of?

Merkel's discs function as:

What type of epidermal cell is most prevalent?

Squamos cells that are full of keratin make up what percent of the epidermal layer?

List the five layers of the epidermis from bottom to top.

The stratum basale is a _______ layer of cells.

The cells of the stratum basale are _______ in appearance.

Melanocytes will be located in which layer of the epidermis?

How often will cells undergo mitosis in the stratum basale?

True or False: When an epidermal cell undergoes mitosis, one daughter moves towards the stratum corneum while the other stays in the stratum basale to divide again.
True False

What are tonofilaments?

Epidermal cells will contain which types of organelles?

How long does it take for a cell to move from the stratum basale to the stratum corneum?

Once a cell reaches the stratum corneum, how long until is gets sloughed off?

In which layer do cells undergo apoptosis, or programmed cell death?

How many layers of cells are in the stratum spinosum?

How many layers of cells are in the stratum granulosum?

How many layers of cells are found in the stratum lucidum?

How many layers of cells are found in the stratum corneum?

What accounts for the "spiny" appearance of the stratum spinosum?

Living langerhans cells and lamellar bodies can be found in which layer of the epidermis?

Why do cells undergo apoptosis in the stratum granulosum?

What is the function of keratohyalin?

When lamellar bodies dump their lipids in order to lubricate and water-proof the cells they become:

Which layer of the epidermis appears clear upon examination?

The stratum lucidum is only present in which two places on the human body?

In which layer of epidermis are the cells dead and full of keratin?

Thickening of the stratum corneum due to repetitive pressure is called a:

What is the last layer of epidermis in which all of the cells are still living?

Which epidermal layer is not found all over the body?

Which layer of epidermis performs the vast majority of cell divisions?

What are the tw purposes of epidermal ridges discussed in class?

True or False: Epidermal ridges are unique to DNA expression.
True False

List the five characterstics of thick skin discussed in class.

List the five characteristics of thin skin discussed in class.

List the five functions of epidermal growth factor (EGF) discussed in class.

Name the two layers of the dermis.

What is the papillary layer of the dermis comprised of?

What is the function of the dermal papilla?

The reticular layer dermis is comprised of what type of tissue?

Inflammation of the dermis is known as:

Skin turgor is a measure for assessing what?

Tattoo ink is deposited in which layer of the cutaneous membrane?

Blistering is the result of what physical phenomenon?

In some parts of the body, the collagenous fibers of the reticular dermal layer run in a more regular orientation. These are known as:

Are the collagenous fibers in the abdomen oriented vertically or horizontally?

Why should incisions be made parallel to the tension lines?

Blood vessel networks in the papillary layer of the dermis are called the:

The cutaneous plexus can be found in which layer of the cutaneous membrane?

The layer beneath the dermis is named the:

The hypodermis is comprised primarily of:

Where is a subcutaneous injection deposited?

Why would you inject something into the hypodermis?

What is the primary function of the hypodermis?