GZOO Dermis & Hypodermis (2) Flashcards
Modified apocrine gland that secretes milk
Mammary
Modified apocrine gland that secretes earwax or cerumen
Ceruminous
- scented sweat glands)
- Axillary, anal and genital areas only
- Ducts open into hair follicles
- The organic molecules in it decompose with time - odor
Apocrine Sweat Glands
- Most numerous
- True sweat: 99% water, some salts, traces of waste
- Open through pores
Ecceine or merocrine
- tubular coiled glands that open in sweat pore on the surface of the skin secreting a clear fluid.
Sudoriferous gland
small alveolar glands usually formed close to hairs and opening on the upper portion of the follicle; absent on palms and soles.
Sebaceous glands
Type of sudoriferous gland:
distributed all over the body except in lips and genital orifice.
Eccrine gland
Very large branched tubular glands found in axillary, mammary and genital areas producing typical body odors.
Apocrine gland
Parts of hair
_____ is embedded in skin while _____ is the part projecting above skin surface.
A Root, shaft
B Shaft, root
A Root, shaft
ROOT is embedded in skin while SHAFT is the part projecting ABOVE skin surface.
True or false
Function of hair:
A Warmth - more in man than other animals
B sense light touch of the skin
C protection - scalp
A It should be: - warmth: LESS IN MAN than other animals - sense light touch of the skin - protection: scalp
Three concentric layers of hair. (Cross section parts)
- ___ (core) - inner part
- ___ (surrounds medulla) - thick median part
- ____ (single layers, overlapping) - covers and forms toughened outer portion.
Three concentric layers of hair.
- MEDULLA (core)
- CORTEX (surrounds medulla)
- CUTICLE (single layers, overlapping)
Make up of hair
Hard keratin
Parts of hair
growth zone; contains melanocytes that give color to the hair.
A Root
B Shaft
C Hair bulb matrix
C Hair bulb matrix - growth zone; contains melanocytes that give color to the hair.
Parts of hair:
enclosed in the follicle
A Root
B Shaft
C Hair bulb matrix
A Root -enclosed in the follicle
Parts of the hair:
the visible but dead portion of hair projecting the above surface of skin.
A Root
B Shaft
C Hair bulb matrix
B Shaft - the visible but dead portion of hair projecting the above surface of skin.
Which of the following is not true for nail?
A Finger nails grow at approximately 1mm per week
B It is made of hard keratin
C Corresponds to hooves and claws
D It grows from nail bed
Answer:
D It grows from nail bed
Nails grow from NAIL MATRIX.
Covers the nail root
A Nail Body B Free Edge C Nail Root D Nail Bed E Hyponychium or Cuticle F Nail Matrix G
Covers the nail root
E Hyponychium or Cuticle
the distal exposed border attached to undersurface of hyponychium
A Nail Body B Free Edge C Nail Root D Nail Bed E Hyponychium or Cuticle F Nail Matrix G Lanula
the distal exposed border attached to undersurface of hyponychium
B Free Edge
visible attached portion
A Nail Body B Free Edge C Nail Root D Nail Bed E Hyponychium or Cuticle F Nail Matrix G Lanula
visible attached portion
A Nail Body
actually the stratum granulosum of epidermis.
A Nail Body B Free Edge C Nail Root D Nail Bed E Hyponychium or Cuticle F Nail Matrix G Lanula
actually the stratum granulosum of epidermis.
Nail Bed
actually the stratum granulosum of epidermis.
A Nail Body B Free Edge C Nail Root D Nail Bed E Hyponychium or Cuticle F Nail Matrix G Lanula
actually the stratum granulosum of epidermis.
D Nail Bed
the growth area of nail.
A Nail Body B Free Edge C Nail Root D Nail Bed E Hyponychium or Cuticle F Nail Matrix G Lanula
the growth area of nail.
F Nail Matrix
Proximally embedded in the skin.
A Nail Body B Free Edge C Nail Root D Nail Bed E Hyponychium or Cuticle F Nail Matrix G Lanula
Proximally embedded in the skin.
C Nail Root
The hypodermis is made up of which of the following ?
A Adipose (fat) and loose connective tissue
B Blood vessels and nerves
C All of the above
D None of the above
C All of the above.
Hypodermis is made of:
Adipose (fat) and loose connective tissue
Blood vessels and nerves
Functions of hypodermis:
A Storage in adipose tissue
B Cushions underlying tissue
C Insulates underlying structures
D All of the above
D All of the above
HYPODERMIS Functions
Storage in adipose tissue, cushions and insulates underlying structures
– indicates embarrasment ( blushing ), fever, hypertension, inflammation, or allergy
A Jaundice or yellow cast
B Redness or erythema
C Blanching or Pallor
D Bruises or black and blue marks
indicates embarrasment ( blushing ), fever, hypertension, inflammation, or allergy
B Redness or erythema
under certain types of emotional stress ( fear, anger ) some people become pale - pale skin also signifies anemia or hypotension
A Jaundice or yellow cast
B Redness or erythema
C Blanching or Pallor
D Bruises or black and blue marks
under certain types of emotional stress ( fear, anger ) some people become pale - pale skin also signifies anemia or hypotension
C Blanching or Pallor
– due to escape of blood from the circulation and has clotted in the tissue spaces Hematoma – clotted blood masses unusual tendency to bruising may signify vitamin C
A Jaundice or yellow cast
B Redness or erythema
C Blanching or Pallor
D Bruises or black and blue marks
– due to escape of blood from the circulation and has clotted in the tissue spaces Hematoma – clotted blood masses unusual tendency to bruising may signify vitamin C
D Bruises or black and blue marks
abnormal yellow skin tone usually signifies a liver disorder where excess bile pigments are absorbed into the blood, circulated throughout the body and deposited in body tissues
A Jaundice or yellow cast
B Redness or erythema
C Blanching or Pallor
D Bruises or black and blue marks
abnormal yellow skin tone usually signifies a liver disorder where excess bile pigments are absorbed into the blood, circulated throughout the body and deposited in body tissues
A Jaundice or yellow cast
Which of the following is not true for CYANOSIS?
A bluish discoloration of the skin due to poor supply of carbon dioxide of the hemoglobin B common during heart failure and severe breathing disorders
C skin does not appear cyanotic in black people because of the masking effects of melanin
D apparent in mucous membranes and nail beds
Answer: A
– bluish discoloration of the skin due to POOR OXYGENATION of the HEMOGLOBIN (RBC)
- common during heart failure and severe breathing disorders
- skin does not appear cyanotic in black people because of the masking effects of melanin, but cyanosis is apparent in mucous membranes and nail beds
Pigment contributing to skin color
in the dermal blood vessels
- the crimson color of ____ the dermal blood supply flushes through the transparent cell layers above and gives the skin a “rosy glow”
A Oxygen/Hemoglobin
B Melanin
C Carotene
A Oxygen/Hemoglobin
Oxygen – amount of oxygen bound to hemoglobin ( pigment in RBC ) in the dermal blood vessels
- the crimson color of OXYGEN RICH HEMOGLOBIN in the dermal blood supply flushes through the transparent cell layers above and gives the skin a “ROSY GLOW”
Pigment contributing to skin color
– deposited in the stratum corneum and subcutaneous tissue
- orange-yellow pigment abundant in carrots, orange, deep yellow or leafy green vegetables
A Oxygen/Hemoglobin
B Melanin
C Carotene
C Carotene
Pigment contributing to skin color
– yellow, reddish brown or black - people who produced a LOT of _____ have BROWNED-toned skin
- LIGHT skinned ( caucasian ) people have less _____
A Oxygen/Hemoglobin
B Melanin
C Carotene
B Melanin
Hypodermis is also called
superficial fascia/subcutaneous fascia
The following are found in dermis except for
A Leukocytes, blood vessels
B Intercalated disc, dead keratinocytes
C Sebaceous gland, sudoriferous gland, hair follicles
D Collagen, elastin, nerve fibers
E arrector pili or arrectus pilus muscles
Answer:
B Intercalated disc, dead keratinocytes
