Anatomy: Skin Chapter 5

Question 0

Epidermis

Answer 0

Stratified Squamous Keratinized Epithelium. Thickness of this lay varies.

Question 1

Integumentary means?

Answer 1

Skin

Question 2

Dermis

Answer 2

Dense Irregular Fibrous CT. Blood vessels are also present in the dermis.

Question 3

Hypodermis

Answer 3

Is mostly adipose tissue, Alison called subcutaneous tissue. This tissue is continuous with the superficial fascia- the fibrous connective tissue attaching the skin the muscles and other organs.

Question 5

What type of cells are in the epidermis?

Answer 5

Keratinocytes - the majority of the epidermal cells, these cells contain large amounts of the cytoskeleton protein called keratin, arranged in fibrous bundles.
Melanocytes - spider snapped cells that synthesize the black pigment molecule melanin. Melanin is packed in granular (called melanosomes) which are distributed along the cytoskeleton and transferred to keratinocytes.
Dendritic - these cells work with the immune system to ingest
Tactile- these cells are associated with a dendrite extended from a neuron to form a tactile disk. They respond to physical force, or touch.

Question 6

Keratinocytes

Answer 6

the majority of the epidermal cells, these cells contain large amounts of the cytoskeleton protein called keratin, arranged in fibrous bundles.

Question 7

Melanocytes

Answer 7

spider snapped cells that synthesize the black pigment molecule melanin. Melanin is packed in granular (called melanosomes) which are distributed along the cytoskeleton and transferred to keratinocytes.

Question 8

Dendritic

Answer 8

these cells work with the immune system to ingest

Question 9

Areolar tissue

Answer 9

Loose connective tissue in hypodermis

Question 9

Tactile

Answer 9

these cells are associated with a dendrite extended from a neuron to form a tactile disk. They respond to physical force, or touch.

Question 10

Stratum Basale of epidermis

Answer 10

Contains a single layer of columnar cells actively dividing my mitosis to produce cells that migrate into the upper epidermal layers and ultimately to the surface of the skin.

Question 11

Stratum Spinosum of epidermis

Answer 11

Contains 8-10 layers of cells connected by Desmosomes. These cells are moderately active in mitosis.

Question 12

Stratum Granulosum of epidermis

Answer 12

Contains two to four layers of cells held together by desmosomes. These cells contain keratohyaline granules, which contribute to the formation of keratin in the upper layers of the epidermis.

Question 13

Stratum Lucidum of epidermis

Answer 13

Contains two to three layers of enucleated cells. This layer is found only in “thick skin” such as the palm of your hand and the sole of your feet.

Question 14

Stratum Corneum of epidermis

Answer 14

Contains many layers of dead, enucleated keratinocytes completely filled with keratin. The outer most layers a consistently shed.

Question 15

Papillary region of dermis

Answer 15

Loose areolar CT

Question 16

Reticular region of dermis

Answer 16

Under papillary layer. Composed of dense irregular fibrous CT.

Question 17

Cleavage Tension Lines

Answer 17

Are separations between bundles of collagen in the reticular layer.

Question 18

Flexure Lines

Answer 18

From where the dermis is closely attached to the fascia.