What is an epiphyseal plate quizlet?

Epiphyseal Plate. A disc of hyaline cartilage that grows during childhood to lenghten the bone.

What is the main function of the epiphyseal plate?

The epiphyseal growth plate is the main site of longitudinal growth of the long bones. At this site, cartilage is formed by the proliferation and hypertrophy of cells and synthesis of the typical extracellular matrix.

What is the function of the epiphyseal plate quizlet?

The epiphyseal plate allows the diaphysis of the bone to increase in length until early adulthood. When growth stops, the epiphyseal plate cartilage is replaced with bone, then becoming the epiphyseal line.

What is the epiphyseal plate?

A growth plate, also called an epiphyseal plate, is a section of cartilage located at the ends of the long bones of children and teenagers. It is here that new bone develops to add length as the child grows. Once a person has physically matured, usually in adolescence, these plates permanently close to form solid bone.

What happens when epiphyseal plates close quizlet?

When adolescence comes to an end (at about age 18 in females and age 21 in males), the epiphyseal plates close; that is, the epiphyseal cartilage cells stop dividing and bone replaces all remaining cartilage.

What is the difference between the epiphyseal plate and line quizlet?

14. What is the difference between an epiphyseal plate and an epiphyseal line? The Epiphyseal plate contains cartilage used for producing bone. The Epiphyseal line is formed after the epiphyseal plate has stopped producing bone).

What is the importance of epiphyseal end plate?

The Epiphyseal Plate and Growth in Length of a Bone. The power to increase the length of a bone is concentrated in the cartilaginous epiphyseal plates located near each end of the bone.

What are the 4 zones of the epiphyseal plate?

Terms in this set (4)

• Proliferation Zone. Zone 1. Cartilage cells undergo mitosis.
• Hypertrophic Zone. Zone 2. Older cartilage cells enlarge.
• Calcification Zone. Zone 3. Matrix becomes calcified; cartilage cells die; matrix begins deteriorating.
• Ossification Zone. Zone 4. New bone formation is occurring.

What is the function of the periosteum and epiphyseal plates?

Dense, irregular connective tissue forms a sheath (periosteum) around the bones. The periosteum assists in attaching the bone to surrounding tissues, tendons, and ligaments. The bone continues to grow and elongate as the cartilage cells at the epiphyses divide.

What is the difference between epiphyseal plate and epiphyseal line?

All that remains of the epiphyseal plate is the epiphyseal line ((Figure)). As a bone matures, the epiphyseal plate progresses to an epiphyseal line. (a) Epiphyseal plates are visible in a growing bone. (b) Epiphyseal lines are the remnants of epiphyseal plates in a mature bone.

At what age does the epiphyseal plate close?

When Do Growth Plates Close? Growth plates usually close near the end of puberty. For girls, this usually is when they’re 13–15; for boys, it’s when they’re 15–17.

What happens to the epiphyseal plate at adulthood quizlet?

Epiphyseal plate contains cartilage used for producing bone & the epiphyseal line is formed after the epiphyseal plate has stopped producing bone. Epiphyseal plate. Growth plate, made of hyaline cartilage is produced where ossification occurs in immature bones.

How are the epiphyses separated from the diaphysis?

In children and young adults, the epiphyses are separated from the diaphysis by epiphyseal cartilage or plates, where bone grows in length. Estrogen and testosterone release at puberty initiates closure of the epiphyseal plates. When bone growth is complete, the epiphyseal cartilage is replaced with bone, which joins it to the diaphysis.

When does the epiphyseal plate close in children?

Estrogen and testosterone release at puberty initiates closure of the epiphyseal plates. When bone growth is complete, the epiphyseal cartilage is replaced with bone, which joins it to the diaphysis. Fractures of the epiphyseal plates in children can lead to slow bone growth or limb shortening.

How does the epiphyseal plate drive bone growth?

Growth in height is driven by elongation of long bones due to chondrogenesis at the epiphyseal plates, also known as the growth plate. This process results from chondrocyte proliferation, hypertrophy, and extracellular matrix secretion.

What happens in the zone of ossification of the epiphyseal?

Under the influence of growth hormone, the process of forming new cartilage on one side of the epiphyseal plate and its removal and replacement by new spongy bone on the other continues as long as the bone is growing.