Podcast
Questions and Answers
Which type of secretion is produced by apocrine sweat glands?
Which type of secretion is produced by apocrine sweat glands?
- Watery and odorless
- Thick and sticky
- Clear and contains only water
- Viscous and contains proteins, carbohydrates, and lipids (correct)
Where is the eponychium located?
Where is the eponychium located?
- Underneath the nail plate
- At the base of the nail bed
- On the surface of the skin
- Around the cuticle (correct)
Which part of the nail is made of hard keratin?
Which part of the nail is made of hard keratin?
- Eponychium
- Nail bed
- Hyponychium
- Nail plate (correct)
What does the nail matrix generate?
What does the nail matrix generate?
What is the function of the hyponychium?
What is the function of the hyponychium?
What is the composition of apocrine secretion?
What is the composition of apocrine secretion?
Which layer of the skin is sensitive to light touch?
Which layer of the skin is sensitive to light touch?
What is the function of Pacinian corpuscles?
What is the function of Pacinian corpuscles?
Which layer of the skin serves as a barrier protecting against physical and chemical injury and infection?
Which layer of the skin serves as a barrier protecting against physical and chemical injury and infection?
What is the function of arrector pili muscles?
What is the function of arrector pili muscles?
Where do sebaceous glands empty their secretion?
Where do sebaceous glands empty their secretion?
Which layer of the skin is involved in the synthesis of vitamin D3 from precursors in the skin?
Which layer of the skin is involved in the synthesis of vitamin D3 from precursors in the skin?
Which cell type is responsible for producing the pigment melanin in the skin?
Which cell type is responsible for producing the pigment melanin in the skin?
Which type of sweat gland has larger ducts and secretory units?
Which type of sweat gland has larger ducts and secretory units?
Where are apocrine sweat glands located?
Where are apocrine sweat glands located?
Which type of sweat gland is responsible for producing sweat as a response to heat or exercise?
Which type of sweat gland is responsible for producing sweat as a response to heat or exercise?
Which layer of the epidermis is not present in thin skin?
Which layer of the epidermis is not present in thin skin?
From which embryonic origin does the epidermis arise?
From which embryonic origin does the epidermis arise?
Which layer of the epidermis is composed of flat, dead cells continuously shed?
Which layer of the epidermis is composed of flat, dead cells continuously shed?
Which layer of the skin is responsible for excretion of substances produced by glands?
Which layer of the skin is responsible for excretion of substances produced by glands?
Where is thick skin found in the body?
Where is thick skin found in the body?
What is the function of Langerhans cells in the epidermis?
What is the function of Langerhans cells in the epidermis?
What is the main component of the keratin layer in the epidermis?
What is the main component of the keratin layer in the epidermis?
Which type of cells in the epidermis produce melanin?
Which type of cells in the epidermis produce melanin?
Which layer of the skin is composed of keratinized stratified squamous epithelium?
Which layer of the skin is composed of keratinized stratified squamous epithelium?
Which layer of the skin contains cells with two types of granules, including keratohyaline granules and lamellar granules?
Which layer of the skin contains cells with two types of granules, including keratohyaline granules and lamellar granules?
Which layer of the skin is present only in very thick skin?
Which layer of the skin is present only in very thick skin?
Which layer of the skin is the bottom layer, just above the basal lamina, and contains cuboidal to columnar keratinocytes?
Which layer of the skin is the bottom layer, just above the basal lamina, and contains cuboidal to columnar keratinocytes?
Which layer of the skin is between the stratum granulosum and stratum basale, and contains cells connected by spot desmosomes?
Which layer of the skin is between the stratum granulosum and stratum basale, and contains cells connected by spot desmosomes?
Which layer of the skin is the most superficial layer?
Which layer of the skin is the most superficial layer?
Study Notes
Sweat Glands
- Apocrine sweat glands produce a type of secretion that is thick and protein-rich.
- Eccrine sweat glands, on the other hand, produce a sweat response to heat or exercise.
Nail Structure
- The eponychium is located at the base of the nail.
- The nail plate is made of hard keratin.
- The nail matrix generates the nail plate.
Integumentary System
- The hyponychium functions to seal the nail plate to the nail bed.
- The stratum corneum is the layer of the skin sensitive to light touch.
- Pacinian corpuscles function to detect pressure and vibrations.
- The stratum corneum serves as a barrier protecting against physical and chemical injury and infection.
Hair and Sebaceous Glands
- Arrector pili muscles function to cause hair to stand upright.
- Sebaceous glands empty their secretion into the hair follicle.
Vitamin D Synthesis
- The stratum Malpighi is involved in the synthesis of vitamin D3 from precursors in the skin.
Skin Pigmentation
- Melanocytes are the cell type responsible for producing the pigment melanin in the skin.
Epidermal Layers
- The epidermis arises from ectodermal embryonic origin.
- The stratum corneum is composed of flat, dead cells continuously shed.
- The stratum lucidum is present only in very thick skin.
- The stratum basale is the bottom layer, just above the basal lamina, and contains cuboidal to columnar keratinocytes.
- The stratum spinosum is between the stratum granulosum and stratum basale, and contains cells connected by spot desmosomes.
- The stratum granulosum is composed of keratinized stratified squamous epithelium and contains cells with two types of granules, including keratohyaline granules and lamellar granules.
Skin Location
- Thick skin is found on the palms of the hands and soles of the feet.
- Apocrine sweat glands are located in the axillary and anogenital regions.
- Eccrine sweat glands are responsible for producing sweat as a response to heat or exercise.
Other
- Langerhans cells in the epidermis function to detect and respond to pathogens.
- The main component of the keratin layer in the epidermis is dead, keratinized cells.
- Melanocytes in the epidermis produce melanin.
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Description
Test your knowledge on the differences between thick and thin skin in this quiz. Learn about the composition of the stratum corneum, the thickness of the epidermis, and the presence of keratin layers in different parts of the body.
