BIOL 2401 Exam 2 Review

Which of the following is a function of the skin?

• sensory organ for pain¸ vibration¸ and changes in temperature

• protection against excessive water loss

• aids in the synthesis of vitamin D

• involved in thermoregulation of the body

How do melanocytes contribute to the function of the epidermis?

• They produce keratin for waterproofing

• They act as antigen-presenting cells for immune response.

• They are found in all layers including the stratum corneum.

• They produce pigment for UV protection.

Which factor is NOT directly responsible for affecting skin pigmentation?

• Degree of transfer within the dermis

• Type of melanin produced

• Size and number of melanosomes produced

• Thickness of the hypodermis

Tags

NGSS.MS-LS3-1

What is the correct sequence of the epidermal layers from the outermost to the innermost layer in thick skin?

• Stratum corneum, Stratum lucidum, Stratum granulosum, Stratum spinosum, Stratum basale

• Stratum basale, Stratum spinosum, Stratum granulosum, Stratum lucidum, Stratum corneum

• Stratum granulosum, Stratum corneum, Stratum spinosum, Stratum basale, Stratum lucidum

• Stratum lucidum, Stratum basale, Stratum spinosum, Stratum granulosum, Stratum corneum

layer of the epidermis that is NOT found in thin skin.

• Stratum lucidum

• Stratum basale

• Stratum spinosum

• Stratum granulosum

Vitamin D3 is important for the absorption of what biologically important ion?

• potassium

• calcium

• iron

• magnesium

• nitrogen

Which of the following statements best describes the primary functions of the dermis?

• Supports epidermis and provides sensory functions.

• Serves as a major site for keratinocyte production.

• Specializes in pigmentation and vitamin D production.

• Acts as a protective barrier against pathogens.

What is a primary function of the hypodermis in the integumentary system?

• Protection from UV radiation

• Energy storage and insulation

• Synthesis of vitamin D

• Keratin production

Ricky just completed a 2-hour cardio session at the gym. To cool the body down after an intensive workout, his body ______.

• increases sudoriferous apocrine gland activity

• increases sudoriferous eccrine gland activity

• decreases sudoriferous apocrine gland activity

• decreases sudoriferous eccrine gland activity

Tags

NGSS.HS-LS1-3

The epiphyses of long bones are covered by ______.

• periosteum

• endosteum

• cartosteum

• hyaline cartilage

• canals