Question

1. what is the function of each?

a. chondrocytes:
b. lacunae:
c. perichondrium:

1. identify each tissue type and an example of where it can be found in the body (note: cartilage matrix consists of a dense network of collagen and elastic fibers embedded in a rubbery component of the ground substance. cartilage withstands more stress than either loose or dense connective tissues)

a.
b.
c.

Explanation:

a. Chondrocytes are the cells responsible for the formation, maintenance, and repair of cartilage matrix. They secrete the components of the extracellular matrix such as collagen and proteoglycans.
b. Lacunae are small cavities in the cartilage matrix where chondrocytes are housed. They provide a space for the cells and help in maintaining the structural integrity of the cartilage.
c. Perichondrium is a layer of dense irregular connective - tissue that surrounds most cartilage in the body. It has a role in the growth and repair of cartilage, and also provides nutrition to the underlying cartilage tissue.

For part 2, without seeing the actual images:
a. Hyaline cartilage: It is a type of cartilage with a glass - like appearance. It can be found at the ends of long bones (articular cartilage), in the nose, trachea, and larynx.
b. Elastic cartilage: Contains many elastic fibers in addition to collagen fibers. It is found in the external ear (pinna) and the epiglottis.
c. Fibrocartilage: Has a large number of collagen fibers. It is found in the intervertebral discs and the pubic symphysis.

Answer:

1.
a. Chondrocytes: Secrete cartilage matrix components.
b. Lacunae: House chondrocytes, maintain cartilage structure.
c. Perichondrium: Aids in cartilage growth, repair and nutrition.
2.
a. Hyaline cartilage; ends of long bones, nose, trachea, larynx.
b. Elastic cartilage; external ear, epiglottis.
c. Fibrocartilage; intervertebral discs, pubic symphysis.