MASTERING BIO 253 EXAMS: A+ GRADED GUIDE WITH
LATEST QUESTIONS AND ANSWERS.
Within the skin, the ______ is the thicker layer composed primarily of connective tissue, while the
______ layer is composed of stratified squamous epithelium.
dermis; epidermal
Blood vessels are found in the ______, but not in the ______.
dermis; epidermis
What tissues are present within the subcutaneous layer?
adipose tissue
loose connective tissue
Which of the following are included in the integumentary system?
sebaceous and sweat glands
hair and nails
the skin
Comparing the dermis to the epidermis, indicate three true statements.
The dermis is vascular, but the epidermis lacks blood vessels.
The dermis is composed of several types of tissue, but the epidermis is composed of one type.
The dermis has collagen and elastin fibers, and the epidermis does not.
Areolar and ______ tissues are found within the subcutaneous layer.
adipose
Within the epidermis, cell division and growth occur in the stratum_________?
basale
The epidermis only contains one type of tissue, namely _________ __________ epithelium.
stratified squamous
The epidermis is avascular (lacks blood vessels). Therefore, oxygen, nutrients, and wastes must diffuse
to and from blood vessels found in what region of the skin?
dermis
What type of epidermal cell produces the protein keratin?
keratinocyte
The stratum corneum of the epidermis is made of ______.
many layers of tough, tightly packed, dead cells
, What layer of the skin lacks blood vessels?
epidermal layer
In the epidermis of thin skin, where is the stratum spinosum found?
between the stratum basale and stratum granulosum
Which statement describes the stratum basale of the epidermis?
it contains cells that are dividing
The palms of the hands and the soles of the feet are covered with ______ skin.
thick
What class of tissue forms the epidermis of the skin?
stratified squamous epithelium
Merkel cells in the epidermis respond to _____.
light touch
What is the function of a keratinocyte?
To produce a waterproofing protein.
Specialized epidermal cells called_________ produce the pigment melanin.
melanocytes
The outermost layers of the epidermis are called the stratum _________?
corneium
How is melanin protective?
absorbs UV radiation from sunlight
List the epidermal layers of thin skin from the most superficial (at the top) to the deepest layer (at the
bottom).
1.) Stratum Corneium
2.) stratum granulosum
3.) stratum spinosum
4.) stratum basale
Where in the body is thick skin, with five epidermal layers, found?
palms of hands and soles of feet
The primary determinant of skin color is a pigment-protein called
Melanin
LATEST QUESTIONS AND ANSWERS.
Within the skin, the ______ is the thicker layer composed primarily of connective tissue, while the
______ layer is composed of stratified squamous epithelium.
dermis; epidermal
Blood vessels are found in the ______, but not in the ______.
dermis; epidermis
What tissues are present within the subcutaneous layer?
adipose tissue
loose connective tissue
Which of the following are included in the integumentary system?
sebaceous and sweat glands
hair and nails
the skin
Comparing the dermis to the epidermis, indicate three true statements.
The dermis is vascular, but the epidermis lacks blood vessels.
The dermis is composed of several types of tissue, but the epidermis is composed of one type.
The dermis has collagen and elastin fibers, and the epidermis does not.
Areolar and ______ tissues are found within the subcutaneous layer.
adipose
Within the epidermis, cell division and growth occur in the stratum_________?
basale
The epidermis only contains one type of tissue, namely _________ __________ epithelium.
stratified squamous
The epidermis is avascular (lacks blood vessels). Therefore, oxygen, nutrients, and wastes must diffuse
to and from blood vessels found in what region of the skin?
dermis
What type of epidermal cell produces the protein keratin?
keratinocyte
The stratum corneum of the epidermis is made of ______.
many layers of tough, tightly packed, dead cells
, What layer of the skin lacks blood vessels?
epidermal layer
In the epidermis of thin skin, where is the stratum spinosum found?
between the stratum basale and stratum granulosum
Which statement describes the stratum basale of the epidermis?
it contains cells that are dividing
The palms of the hands and the soles of the feet are covered with ______ skin.
thick
What class of tissue forms the epidermis of the skin?
stratified squamous epithelium
Merkel cells in the epidermis respond to _____.
light touch
What is the function of a keratinocyte?
To produce a waterproofing protein.
Specialized epidermal cells called_________ produce the pigment melanin.
melanocytes
The outermost layers of the epidermis are called the stratum _________?
corneium
How is melanin protective?
absorbs UV radiation from sunlight
List the epidermal layers of thin skin from the most superficial (at the top) to the deepest layer (at the
bottom).
1.) Stratum Corneium
2.) stratum granulosum
3.) stratum spinosum
4.) stratum basale
Where in the body is thick skin, with five epidermal layers, found?
palms of hands and soles of feet
The primary determinant of skin color is a pigment-protein called
Melanin
