BIO160 Intro to Human Anatomy and Physiology Lab Quiz
Question 1: Which of the following is a protective function of skin?
Excretion of vitamin D
Prevention of water loss
Red blood cell production
Production of synovial fluid
Prevention of calcium loss
Question 2: Which of the following, in addition to protection, is a function of the integumentary system?
Production of mucous
Production of blood cells
Site of calcium synthesis
Site of vitamin D synthesis
Excretion of hemoglobin
Question 3: The epidermis is mostly composed of what cell type?
Columnar squamous cells
Keratinocytes
Melanocytes
Granulocytes
Merkel cells
Question 4: Where are the blood vessels of the skin located?
Epidermis only
Papillary dermis only
Reticular dermis only
Epidermis and papillary dermis
Papillary and reticular dermis
Question 5: What layer of the epidermis is only present in thick skin?
Stratum corneum
Stratum spinosum
Stratum basale
Stratum lucidum
Stratum granulosum
Question 6: What layer of the epidermis is 20 to 30 cells thick and contains mostly dead cells?
Stratum corneum
Stratum spinosum
Stratum basale
Stratum lucidum
Stratum granulosum
Question 7: What layer of the epidermis contains only one cell layer and is highly mitotic?
Stratum corneum
Stratum spinosum
Stratum basale
Stratum lucidum
Stratum granulosum
Question 8: What are melanocytes?
Pigment producing cells located in the stratum corneum
Pigment producing cells located in the stratum basale
Keratin producing cells located in the stratum spinosum
Keratin producing cells located in the stratum basale
Sensory receptors located in the papillary layer of the dermis
Question 9: What layer of the skin contains many collagen fibers that make the skin tough and attract and hold water?
Stratum granulosum
Stratum basale
Papillary dermis
Reticular dermis
Hypodermis
Question 10: What are the fingerlike projections that protrude into the epidermis and contain pain and touch receptors?
Epidermal sheaths
Epidermal papillae
Dermal papillae
Arrector pili
Pacinian corpuscles
Question 11: What is adaptation?
When a stimulus is applied for a long time and receptor response slows down
When a stimulus is changed suddenly and receptor response is increased
When a stimulus is applied for a short time and receptor response is increased
When a stimulus is changed over a period of time and response is weakened
When a stimulus is applied over a long time and receptor response is increased
Question 12: Which of the following is correct about tactile localization?
The locations of touch receptors can be identified in all areas of the body equally.
Density of touch receptors varies significantly in different areas of the body.
The location of touch receptors is processed in the spinal cord.
It is the ability to ignore a stimulus over a period of time.
Touch receptors are associated with large muscles and large motor skills.
Question 13: Which of the following are receptors for pain and temperature in the skin?
Meisnner's corpuscles
Pacinian corpuscles
Hair follicle receptors
Free nerve endings
Arrector pili
Question 14: Which of the following best describes skin appendages?
They include hair and nails and are derived from the dermis.
They include hair and nails and are located in the epidermis.
They include hair, nails, and glands and are located in the epidermis.
They include nails and glands and are located in the hypodermis.
They include hair, nails, and glands and are derived from epidermis.
Question 15: What glands are located all over the body except the palms of the hands and soles of the feet?
Eccrine sweat glands
Apocrine sweat glands
Sudoriferous glands
Follicular glands
Sebaceous glands
Question 16: How are apocrine glands different from eccrine glands?
Eccrine glands are only located in the axillary and genital areas.
Eccrine glands are not found on the face.
Apocrine glands secrete a milky protein and fat-rich substance.
Eccrine glands secrete a milky protein and fat-rich substance.
Apocrine glands are located all over the body.
Question 17: What is the function of sebum?
It removes heat from the body.
It provides a natural water repellent for the skin.
It keeps the skin from burning.
It keeps the skin soft and moist.
It removes waste products from the body.
Question 18: What part of a hair is enclosed within a follicle?
Hair shaft
Hair cuticle
Hair bulb
Hair root
Dermal sheath
Question 19: Where is the hair formed?
In the dermal sheath
In the cuticle sheath
In the hair bulb
In the hair shaft
In the medulla
Question 20: What structure can be attached to the hair root and cause goose bumps?
Arrector pili
Hair shaft
Connective tissue papillae
Epidermal cuticle
Matrix
Question 21: Which of the following describes the location of a hair follicle?
It is perpendicular to the surface of the skin and protrudes into the epidermis only.
It is perpendicular to the surface of the skin and protrudes into the dermis.
It is perpendicular to the surface of the skin and protrudes into the hypodermis.
It is at a slant to the surface of the skin and protrudes into the epidermis only.
It is at a slant to the surface of the skin and protrudes into the dermis.
Question 22: How are the hair shaft and epidermis alike?
Both are highly regenerative.
Both are mostly dead keratinocytes.
Both synthesize Vitamin
Both contain a medulla and cuticle.
Both lie on top of a basement membrane.
Question 23: What is the name of the thickened nail matrix that appears as a white crescent at the proximal edge of a nail?
Cuticle
Hyponychium
Lunule
Eponychium
Papilla
Question 24: What is the site of nail growth?
Nail bulb
Nail folds
Nail cuticle
Nail matrix
Epidermal sheath
Question 25: How can the nail bed be used to diagnose cyanosis?
The nail bed will be nearly white.
The nail bed will give off a blue cast.
The nail bed will be pinker than normal.
The lunule will disappear.
The cuticles will bleed.