Lab 5 Tissues and Skin BIO201L
Student Name:
Access Code (located on the lid of your lab kit): AC-AQW1GW
Lab Report Format Expectations
Utilize college level grammar and professional formatting when completing this worksheet.
Submissions without proper formatting, all required photos or sufficient responses will be rejected.
Pre-lab Questions
1. What is a tissue?
A tissue comprises a cluster of cells with similar structures and functions, collaborating
to carry out specific tasks within the body.
2. What is the function of epithelial tissue?
Epithelial tissue acts as a protective barrier, lining both external and internal surfaces of
the body. Additionally, it facilitates functions such as absorption, secretion, and
sensation.
3. What is the function of connective tissue?
Connective tissue offers structural support and connects various tissues and organs
within the body. It is also involved in nutrient and waste transport.
4. What is the function of muscular tissue?
Muscular tissue is accountable for bodily movements and posture maintenance, as it
can contract and produce force.
5. What is the function of nervous tissue?
Nervous tissue facilitates the transmission and reception of signals through electrical
impulses, forming the foundation of the nervous system and enabling communication
among various body parts.
6. Describe sebaceous glands, sweat glands, and hairs with regard to the function of the
skin.
- Sebaceous glands generate sebum, an oily secretion that moisturizes and shields the
skin.
- Sweat glands secrete sweat, assisting in regulating body temperature by cooling
through evaporation.
, Lab 5 Tissues and Skin BIO201L
- Hair on the skin serves as insulation and protection, and it also contributes to sensory
perception.
7. What is the function of melanin?
Melanin is accountable for the coloration of the skin, hair, and eyes. Its main role
involves absorbing and dispersing ultraviolet (UV) radiation emitted by the sun, thereby
shielding the skin from possible harm.
8. List the similarities and differences of the layers of the epidermis.
Similarities: Both the epidermis and the skin comprise multiple layers of cells.
Differences: These layers encompass the stratum corneum, which forms the outermost
layer of dead cells, the stratum lucidum found in thick skin, the stratum granulosum, the
stratum spinosum, and the stratum basale where cell division occurs. Each layer differs
in thickness and cell composition.
Student Name:
Access Code (located on the lid of your lab kit): AC-AQW1GW
Lab Report Format Expectations
Utilize college level grammar and professional formatting when completing this worksheet.
Submissions without proper formatting, all required photos or sufficient responses will be rejected.
Pre-lab Questions
1. What is a tissue?
A tissue comprises a cluster of cells with similar structures and functions, collaborating
to carry out specific tasks within the body.
2. What is the function of epithelial tissue?
Epithelial tissue acts as a protective barrier, lining both external and internal surfaces of
the body. Additionally, it facilitates functions such as absorption, secretion, and
sensation.
3. What is the function of connective tissue?
Connective tissue offers structural support and connects various tissues and organs
within the body. It is also involved in nutrient and waste transport.
4. What is the function of muscular tissue?
Muscular tissue is accountable for bodily movements and posture maintenance, as it
can contract and produce force.
5. What is the function of nervous tissue?
Nervous tissue facilitates the transmission and reception of signals through electrical
impulses, forming the foundation of the nervous system and enabling communication
among various body parts.
6. Describe sebaceous glands, sweat glands, and hairs with regard to the function of the
skin.
- Sebaceous glands generate sebum, an oily secretion that moisturizes and shields the
skin.
- Sweat glands secrete sweat, assisting in regulating body temperature by cooling
through evaporation.
, Lab 5 Tissues and Skin BIO201L
- Hair on the skin serves as insulation and protection, and it also contributes to sensory
perception.
7. What is the function of melanin?
Melanin is accountable for the coloration of the skin, hair, and eyes. Its main role
involves absorbing and dispersing ultraviolet (UV) radiation emitted by the sun, thereby
shielding the skin from possible harm.
8. List the similarities and differences of the layers of the epidermis.
Similarities: Both the epidermis and the skin comprise multiple layers of cells.
Differences: These layers encompass the stratum corneum, which forms the outermost
layer of dead cells, the stratum lucidum found in thick skin, the stratum granulosum, the
stratum spinosum, and the stratum basale where cell division occurs. Each layer differs
in thickness and cell composition.
