Q: Which equation best represents the feedback mechanism for skin temperature regulation?

$T_{body} = T_{set} + (T_{skin} - T_{set}) \times K$

Question 1

Which layer of the skin is primarily responsible for providing strength and elasticity due to its collagen and elastin fibers?

Accepted Answer

Dermis

Question 2

A patient presents with jaundice, causing a yellowish tint to their skin. Which pigment is most directly responsible for this coloration?

Accepted Answer

Bilirubin

Question 3

Which cell type in the epidermis is responsible for producing the pigment that protects against ultraviolet radiation?

Accepted Answer

Melanocytes

Question 4

Which of the following best describes the function of the dermoepidermal junction?

Accepted Answer

It anchors the epidermis to the dermis and acts as a partial barrier.

Question 5

A burn patient has damage extending through the epidermis and dermis but not into the hypodermis. What type of burn is this?

Accepted Answer

Second-degree burn

Question 6

Which process is primarily responsible for the regulation of blood calcium levels in the body?

Accepted Answer

Bone remodeling involving both osteoblasts and osteoclasts

Question 7

Which hormone increases blood calcium levels by stimulating bone resorption?

Accepted Answer

Parathyroid hormone (PTH)

Question 8

A child is diagnosed with a disorder affecting the epiphyseal plates of long bones. Which type of cartilage is most likely involved?

Accepted Answer

Hyaline cartilage

Question 9

Which of the following is a function of the skin in maintaining homeostasis?

Accepted Answer

Regulation of body temperature through sweat production

Question 10

A patient presents with cyanosis, a bluish discoloration of the skin. What is the most likely underlying cause?

Accepted Answer

Unoxygenated hemoglobin in the blood

Question 11

Which of the following best describes the difference between compact bone and cancellous (spongy) bone?

Accepted Answer

Compact bone is dense and forms the outer layer, while cancellous bone is porous and found inside bones.

Question 12

Which of the following equations correctly represents the relationship between heat loss and body temperature regulation by the skin?

Accepted Answer

$Q = mc\Delta T$

Question 13

Which type of bone cell is responsible for breaking down bone matrix during bone remodeling?

Accepted Answer

Osteoclast

Question 14

A patient with a genetic mutation affecting melanin synthesis is likely to have which of the following symptoms?

Accepted Answer

Reduced skin pigmentation and increased sensitivity to UV light

Question 15

Which of the following is NOT a function of bone tissue?

Accepted Answer

Regulation of body temperature

Question 16

Which of the following best explains why exercise can counteract age-related bone density loss?

Accepted Answer

Exercise stimulates osteoblasts, promoting bone formation and increasing bone density.

Question 17

Which of the following structures is NOT part of the integumentary system?

Accepted Answer

Bones

Question 18

A patient has a wound that heals with a thickened scar due to excessive collagen deposition. Which layer of the skin is primarily involved in this process?

Accepted Answer

Dermis

Question 19

Which of the following is the most flexible type of cartilage, found in the external ear and nose?

Accepted Answer

Elastic cartilage

Question 20

Which equation best represents the feedback mechanism for skin temperature regulation?

Accepted Answer

$T_{body} = T_{set} + (T_{skin} - T_{set}) 	imes K$

Module 2.1: Support & Movement – Skin and Skeletal Tissues

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