12) looking at a slide of thin skin under the microscope, you note that the stratum basale is the ______ layer of the epider in from the surface.
a) fifth b) first c) fourth d) second e) third
13) which of the following cells is largely responsible for skin color?
a) mast cell b) merkel cell c) dendritic cell d) melanocyte
14) the least common, but most deadly (i.e. most likely to metastasize), type of skin cancer is ______.
a) skin lymphoma
b) squamous cell carcinoma
c) basal cell carcinoma
d) skin sarcoma
e) malignant melanoma
15) which of the following are associated with the sense of touch?
a) fibroblasts
b) dendritic (langerhans) cells
c) tactile (merkel) cells
d) melanocytes
e) keratinocytes
16) what are the most abundant agranulocytes?
a) lymphocytes b) neutrophils c) eosinophils d) macrophages e) monocytes
17) when a clot is no longer needed, fibrin is dissolved by ______.
a) kallikrein
b) plasmin
c) platelet-derived growth factor
d) prothrombin
e) thromboplastin
18) platelets release ______, a chemical vasoconstrictor that contributes to the vascular spasm.
a) prostacyclin
b) thrombopoietin
c) serotonin
d) plasmin
e) heparin
19) ______ glands are concerned with cooling the body?
a) apocrine b) sebaceous c) ceruminous d) merocrine
20) which layer of the epidermis consists of up to 30 layers of dead cells?
a) stratum corneum
b) stratum lucidum
c) stratum spinosum
d) stratum granulosum
e) stratum basale
21) immune cells of the epidermis tend to be found in the stratum ______.
a) corneum. b) lucidum. c) spinosum. d) basale.
22) which of the following is not found in the epidermis?
a) fibroblasts b) melanocytes c) keratinocytes d) tactile cells
23) ______ burns involve the epidermis, all of the dermis, and often some deeper tissue.
a) partial-thickness b) second-degree c) first-degree d) third-degree

Question

12) looking at a slide of thin skin under the microscope, you note that the stratum basale is the ______ layer of the epider in from the surface.
a) fifth  b) first  c) fourth  d) second  e) third
13) which of the following cells is largely responsible for skin color?
a) mast cell  b) merkel cell  c) dendritic cell  d) melanocyte
14) the least common, but most deadly (i.e. most likely to metastasize), type of skin cancer is ______.
a) skin lymphoma
b) squamous cell carcinoma
c) basal cell carcinoma
d) skin sarcoma
e) malignant melanoma
15) which of the following are associated with the sense of touch?
a) fibroblasts
b) dendritic (langerhans) cells
c) tactile (merkel) cells
d) melanocytes
e) keratinocytes
16) what are the most abundant agranulocytes?
a) lymphocytes  b) neutrophils  c) eosinophils  d) macrophages  e) monocytes
17) when a clot is no longer needed, fibrin is dissolved by ______.
a) kallikrein
b) plasmin
c) platelet-derived growth factor
d) prothrombin
e) thromboplastin
18) platelets release ______, a chemical vasoconstrictor that contributes to the vascular spasm.
a) prostacyclin
b) thrombopoietin
c) serotonin
d) plasmin
e) heparin
19) ______ glands are concerned with cooling the body?
a) apocrine  b) sebaceous  c) ceruminous  d) merocrine
20) which layer of the epidermis consists of up to 30 layers of dead cells?
a) stratum corneum
b) stratum lucidum
c) stratum spinosum
d) stratum granulosum
e) stratum basale
21) immune cells of the epidermis tend to be found in the stratum ______.
a) corneum.  b) lucidum.  c) spinosum.  d) basale.
22) which of the following is not found in the epidermis?
a) fibroblasts  b) melanocytes  c) keratinocytes  d) tactile cells
23) ______ burns involve the epidermis, all of the dermis, and often some deeper tissue.
a) partial-thickness  b) second-degree  c) first-degree  d) third-degree

Accepted Answer

# Brief Explanations:
12) Thin skin's epidermis layers from surface inward: stratum corneum (1st), stratum granulosum (2nd), stratum spinosum (3rd), stratum basale (4th).
13) Melanocytes produce melanin, the pigment that determines skin color.
14) Malignant melanoma is the rarest skin cancer but spreads most easily, making it the deadliest.
15) Tactile (Merkel) cells are specialized for detecting light touch sensations.
16) Lymphocytes are the most numerous agranulocytes, key to adaptive immunity.
17) Plasmin is the enzyme that breaks down fibrin to dissolve blood clots when they are no longer needed.
18) Serotonin is a vasoconstrictor released by platelets to help with vascular spasm during hemostasis.
19) Merocrine (eccrine) sweat glands secrete watery sweat that evaporates to cool the body.
20) The stratum corneum is the outermost epidermal layer, made of up to 30 layers of dead, keratinized cells.
21) Dendritic (Langerhans) cells, the immune cells of the epidermis, are primarily located in the stratum spinosum.
22) Fibroblasts are connective tissue cells found in the dermis, not the epidermis.
23) Third-degree burns destroy the entire epidermis, full dermis, and often extend into deeper underlying tissues.

# Answer:
12) C) fourth
13) D) Melanocyte
14) E) malignant melanoma
15) C) Tactile (Merkel) cells
16) A) Lymphocytes
17) B) plasmin
18) C) serotonin
19) D) Merocrine
20) A) Stratum corneum
21) C) spinosum
22) A) Fibroblasts
23) D) Third-degree

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