Biology: Keratin and Skin Structures Quiz

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What type of skin condition is caused by bacterial infection of hair follicles and sebaceous glands?

Boils and carbuncles (correct)

Cold sores

Contact dermatitis

Athlete's foot

Which degree of burn involves damage to the epidermis and upper dermis, with blisters forming?

Third degree burn

First degree burn

None of these

Second degree burn (correct)

Why are facial burns considered critical burns?

Scar tissue can limit mobility

Can cause swelling and suffocation (correct)

Third degree burn

None of the above

Which is the most common type of skin cancer?

Basal cell carcinoma Signup and view all the answers

What is the chronic disorder that causes depigmentation patches in the skin?

Vitiligo Signup and view all the answers

Which structure detects touch sensations?

Free nerve endings Signup and view all the answers

Which layer of the skin is composed of adipose tissue or fats?

Subcutaneous layer Signup and view all the answers

What are deep pressure receptors in the skin?

Pacinian corpuscle Signup and view all the answers

What is the redness of the skin due to fever, allergic reactions, and infections called?

Erythema Signup and view all the answers

Which of these statements about keratin is correct?

Keratin is a protein that helps form hair, nails, and skin. Signup and view all the answers

Which cell type plays a role in immunity and disease resistance in the epidermis?

Intraepidermal macrophages Signup and view all the answers

Which structures in the skin help prevent water loss and inhibit bacterial growth?

Sebaceous glands and sweat glands Signup and view all the answers

Which term refers to the subcutaneous layer of the skin?

Hypodermis Signup and view all the answers

Which layer of the epidermis is composed of a keratinized stratified squamous epithelium?

Stratum corneum Signup and view all the answers

Which pigment in the skin is capable of absorbing ultraviolet light?

Melanin Signup and view all the answers

Which layer of the epidermis contains cells undergoing mitosis?

Stratum basale Signup and view all the answers

Which statement about the stratum lucidum is correct?

It is present only in thick skin. Signup and view all the answers

Which type of gland is connected to a hair follicle and helps lubricate the hair and skin?

Sebaceous gland Signup and view all the answers

Which layer of the skin is composed mainly of dense irregular connective tissue containing collagen and elastic fibres?

Dermis Signup and view all the answers

What is the inherited inability to produce melanin called?

Albinism Signup and view all the answers

Which of the following is NOT a characteristic of thick skin?

All of these choices are correct Signup and view all the answers

Which skin structure plays an important role in thermoregulation?

Sweat glands Signup and view all the answers

What are scale-like modifications of the epidermis?

Nails Signup and view all the answers

Which type of gland is connected to a hair follicle?