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Integumentary System
Chapter 6
| Question | Answer |
|---|---|
| The _________ system is made up of skin and accessory organs. | Integumentary System |
| Specialized cells, ______________ produce melanin | melanocytes |
| This layer of the skin has no blood vessels in it _______________ | epidermis |
| This layer of the skin contains hair follicles, sebaceous glands and sweat glands _______________ | dermis |
| 90% of epidermal skin cells are | Keratinocytes |
| Which of the following membranes is exposed to the air? mucous membranes serous membranes cutaneous membrane synovial membranes | cutaneous membrane |
| Which of the following membranes line the fibrous capsules surrounding joints? mucous membranes serous membranes cutaneous membrane synovial membranes | synovial membranes |
| Which of the following is a Cutaneous Membrane? Epidermis Dermis Subcutaneous all of the above | all of the above |
| Which of the following epidermis Cells serve as touch receptors? Keratinocytes Merkel Cells Melanocytes | Merkel Cells |
| Which of the following epidermis Cells is the skins 1st line of defense? Langerhan Cells Keratinocytes Merkel Cells Melanocytes | Langerhan Cells |
| People with light complexions produce mostly ________________ type of Melanin. | Pheomelanin |
| List the factors that affects skin color? | Presence of carotin Genetics UV rays or sunlight Levels of oxygen in the blood |
| Which part of the Dermis furnish nutrients to the epidermis? | Dermal papillae |
| There is no definite boundary between the dermis and subcutaneous layer. True False | True |
| What is the function of the eccrine glands? | cools the body |
| Which type of membrane is typically dry? | Cutaneous Membranes |
| What type of membrane is the skin? | Cutaneous Membranes |
| Which type of membrane produces a lubricating fluid that reduces friction from muscle movement? | Synovial Membranes |
| Which type of membrane is often found lining the digestive and respiratory tracts? | Mucous Membranes |
| Which accessory organ of the skin is mainly responsible for cooling the body? | Sweat glands |
| What function do the sebaceous glands in the skin perform? | Secrete sebum to moisturize the skin and hair |
| Which accessory skin organ prevents bacterial invasion and is part of the first line of defense of the immune system? | Skin itself |
| What happens if the accessory skin organ, sebaceous glands, secretes too much sebum? | It can lead to acne or oily skin |
| Which membrane type is specifically designed to secrete a fluid that reduces friction in joints? | Synovial membrane |
| Which membrane type primarily serves as a protective outer barrier for organisms? | Cutaneous membrane |
| Which pigment is primarily responsible for determining skin color in humans? | Melanin |
| How does an increase in melanin production affect skin color when exposed to sunlight? | It darkens the skin |
| Which type of melanin is associated with darker skin tones and has a photoprotective role? | Eumelanin |
| What is the primary phase of the hair growth cycle where the hair shaft is actively produced? | Anagen phase |
| What is the role of dermal papilla in hair growth? | To supply nutrients and signals for hair growth |
| Which cells are primarily responsible for producing the hair pigment during the hair growth process? | Melanocytes |
| In the context of hair growth, what is the primary function of keratin? | To provide structural strength to the hair |
| How does the dilation of blood vessels near the skin surface help in decreasing body temperature? | Facilitates heat loss to the environment |
| Why is the regulation of body temperature vital for the human body? | It prevents disruption in metabolic reactions. |
| Which sensory receptor is primarily responsible for detecting light touch and providing feedback for fine motor control? | Meissner's corpuscles (Tactile corpuscles) |
| Which type of sensory receptor is located deeper in the dermis and is responsible for detecting deep pressure and vibration? | Pacinian corpuscles (Lamellar corpuscles) |
| Identify the sensory receptor involved in sustained touch and texture recognition. | Merkel's disks |
| Which sensory receptor is primarily responsible for the sensation of skin stretching? | Ruffini endings |
| Which receptor type is specifically associated with pain and temperature sensations in the skin? | Free nerve endings |
| What is the primary composition of the protective coverings at the ends of fingers and toes? | Very hard keratin (epithelial cells) |
| Where does cell division occur to form the nail structure? | In the nail root located at the lunula |
| What is the primary component responsible for hair color variation? | Melanin |
| Which pigment is associated with red hair color in humans? | Trichosiderin |
| What is the role of the anagen phase in the hair growth cycle? | It is the growth phase where hair grows actively. |
| What occurs during the catagen phase of the hair growth cycle? | The hair follicle regresses and decreases in size. |
| Cutaneous membrane | The Skin |
| - membrane that lines a cavity without an opening to the outside of the body | Serous Membrane |
| - Thick layer of skin beneath epidermis | Dermis |
| - Beneath the skin | Subcutaneous |
| - Outer epithelial layer of skin | Epidermis |
| - Exocrine gland in skin that secretes sweat | Sweat Gland |
| - Tubelike depression in skin in which a hair develops. | Hair follicle |
| - Membrane that forms inner lining of capsule of freely movable joint | Synovial Membrane |
| - Pertaining to the skin and its accessory organs. | Integumentary |
| - Skin gland that secretes sebum | Sebaceous gland |
| - Process by which cells form fibrils of keratin and harden | Keratinization |
| - Dark pigment normally found in skin and hair | Melanin |
| - Membrane that lines tubes and body cavities that open to outside of the body, mucous membrane. | Mucous Membrane |
Created by:
tmcnu2