Question

select the letter of the choice that best completes the statement. 1. the outermost layer of the skin is the: a. epidermis b. dermis c. hypodermis 2. the substance that serves best to keep our skin smooth and protected is: a. melanin b. keratin c. cortex 3. nerve receptors are found in the: a. epidermis b. dermis c. hypodermis 4. hair contains keratinized cells, which are found in the: a. cuticle layer b. cortex c. medulla 5. the glands that secrete 99% water, small amounts of salt, and organic matter are called: a. endocrine glands b. sudoriferous glands c. sebaceous glands matching match each item in column i with its correct description in column ii. column i 1. eschar 2. papillae 3. head lice 4. stratum germinativum 5. hypoxia 6. herpes zoster 7. sebaceous gland 8. arrector pili muscle 9. rosacea 10. liver disease column ii a. gooseflesh b. chickenpox c. white nails d. sebum e. chronic redness in the face f. ridges in the epidermis g. parasitic insects h. melanocytes i. blackened skin j. nails bluish in color

Explanation:

Multiple - Choice Questions

1. Question 1

• Brief Explanations: The outermost layer of the skin is the epidermis. The dermis is the middle layer and the hypodermis is the innermost layer.
• Answer: a. epidermis

1. Question 2

• Brief Explanations: Keratin is a protein that helps keep the skin smooth and protected. Melanin is a pigment that gives color to the skin and protects from UV rays, and cortex is a part of hair structure.
• Answer: b. keratin

1. Question 3

• Brief Explanations: Nerve receptors are found in the dermis. The epidermis is mainly composed of epithelial cells and the hypodermis is mainly fat and connective tissue.
• Answer: b. dermis

1. Question 4

• Brief Explanations: Keratinized cells in hair are found in the cortex. The cuticle is the outermost layer of hair and the medulla is the innermost, often soft core.
• Answer: b. cortex

1. Question 5

• Brief Explanations: Sudoriferous glands (sweat glands) secrete 99% water, small amounts of salt, and organic matter. Endocrine glands secrete hormones directly into the bloodstream, and sebaceous glands secrete sebum (oil).
• Answer: b. sudoriferous glands

Matching Questions

1. 1. eschar

• Brief Explanations: Eschar is blackened skin, often due to burns or gangrene.
• Answer: i

1. 2. papillae

• Brief Explanations: Papillae are ridges in the epidermis (related to fingerprints and also in other skin - related structures).
• Answer: f

1. 3. head lice

• Brief Explanations: Head lice are parasitic insects that live on the scalp.
• Answer: g

1. 4. stratum germinativum

• Brief Explanations: The stratum germinativum (basal layer) contains melanocytes which produce melanin.
• Answer: h

1. 5. hypoxia

• Brief Explanations: Hypoxia (lack of oxygen) can cause nails to be bluish in color (cyanosis).
• Answer: j

1. 6. herpes zoster

• Brief Explanations: Herpes zoster is also known as shingles, but chickenpox (varicella - zoster virus) is related. Wait, actually, herpes zoster is caused by the varicella - zoster virus, and chickenpox is the primary infection. But in the given options, herpes zoster is matched with chickenpox? No, wait, maybe a mistake in the options? Wait, no, maybe the question has a typo, but according to the options, herpes zoster is matched with b (chickenpox) as they are caused by the same virus.
• Answer: b

1. 7. sebaceous gland

• Brief Explanations: Sebaceous glands secrete sebum (an oily substance).
• Answer: d

1. 8. arrector pili muscle

• Brief Explanations: The arrector pili muscle contraction causes gooseflesh (goosebumps).
• Answer: a

1. 9. rosacea

• Brief Explanations: Rosacea is a skin condition characterized by chronic redness in the face.
• Answer: e

1. 10. liver disease

• Brief Explanations: Liver disease can cause white nails (leukonychia).
• Answer: c

Answer:

Multiple - Choice Questions

1. Question 1

• Brief Explanations: The outermost layer of the skin is the epidermis. The dermis is the middle layer and the hypodermis is the innermost layer.
• Answer: a. epidermis

1. Question 2

• Brief Explanations: Keratin is a protein that helps keep the skin smooth and protected. Melanin is a pigment that gives color to the skin and protects from UV rays, and cortex is a part of hair structure.
• Answer: b. keratin

1. Question 3

• Brief Explanations: Nerve receptors are found in the dermis. The epidermis is mainly composed of epithelial cells and the hypodermis is mainly fat and connective tissue.
• Answer: b. dermis

1. Question 4

• Brief Explanations: Keratinized cells in hair are found in the cortex. The cuticle is the outermost layer of hair and the medulla is the innermost, often soft core.
• Answer: b. cortex

1. Question 5

• Brief Explanations: Sudoriferous glands (sweat glands) secrete 99% water, small amounts of salt, and organic matter. Endocrine glands secrete hormones directly into the bloodstream, and sebaceous glands secrete sebum (oil).
• Answer: b. sudoriferous glands

Matching Questions

1. 1. eschar

• Brief Explanations: Eschar is blackened skin, often due to burns or gangrene.
• Answer: i

1. 2. papillae

• Brief Explanations: Papillae are ridges in the epidermis (related to fingerprints and also in other skin - related structures).
• Answer: f

1. 3. head lice

• Brief Explanations: Head lice are parasitic insects that live on the scalp.
• Answer: g

1. 4. stratum germinativum

• Brief Explanations: The stratum germinativum (basal layer) contains melanocytes which produce melanin.
• Answer: h

1. 5. hypoxia

• Brief Explanations: Hypoxia (lack of oxygen) can cause nails to be bluish in color (cyanosis).
• Answer: j

1. 6. herpes zoster

• Brief Explanations: Herpes zoster is also known as shingles, but chickenpox (varicella - zoster virus) is related. Wait, actually, herpes zoster is caused by the varicella - zoster virus, and chickenpox is the primary infection. But in the given options, herpes zoster is matched with chickenpox? No, wait, maybe a mistake in the options? Wait, no, maybe the question has a typo, but according to the options, herpes zoster is matched with b (chickenpox) as they are caused by the same virus.
• Answer: b

1. 7. sebaceous gland

• Brief Explanations: Sebaceous glands secrete sebum (an oily substance).
• Answer: d

1. 8. arrector pili muscle

• Brief Explanations: The arrector pili muscle contraction causes gooseflesh (goosebumps).
• Answer: a

1. 9. rosacea

• Brief Explanations: Rosacea is a skin condition characterized by chronic redness in the face.
• Answer: e

1. 10. liver disease

• Brief Explanations: Liver disease can cause white nails (leukonychia).
• Answer: c