What is the most dense bone in the skeletal system?
Vertebrate skeletal systems contain two types of bone, cortical or compact and cancellous or spongy (Harkess et al., 1984). Cortical bone is stiff and more dense, while cancellous bone is porous and lightweight with a characteristic fragile honeycomb appearance.
What is the largest bone in your skeletal system?
- Tarsus/Tarsals Calcaneus or heel bone (2) Talus (2) Navicular bone (2) Medial cuneiform bone (2) Intermediate cuneiform bone (2) Lateral cuneiform bone (2) Cuboid bone (2)
- Metatarsals (10)
- Phalanges of the foot Proximal phalanges (10) Intermediate phalanges (8) Distal phalanges (10)
What type of cartilage is the most springy and flexible?
external ear, epiglottis - most flexible type of cartilage. hyaline cartilage connective tissue. Most common type of cartilage. flexible and strong.
What is the smallest skeletal muscle in your body?
- Heart. The heart, which consists of cardiac muscle, is said to be the hardest working muscle in the body.
- Masseter.
- Soleus.
- Gluteus Maximus.
- Uterus.
What is the main type of skeletal cartilage?
Hyaline cartilageHyaline cartilage is the most widespread and is the type that makes up the embryonic skeleton. It persists in human adults at the ends of bones in free-moving joints as articular cartilage, at the ends of the ribs, and in the nose, larynx, trachea, and bronchi.
Is hyaline the most abundant cartilage?
The presence of collagen fibres makes such structures and joints strong, but with limited mobility and flexibility. Hyaline cartilage is the most prevalent type of cartilage. It also forms the temporary embryonic skeleton, which is gradually replaced by bone, and the skeleton of elasmobranch fish.
Where is cartilage most abundant?
So, the correct answer is 'Tracheal rings and costal cartilages'
Which of the 3 types of cartilage is the most abundant?
hyalineThere are three types of cartilage: hyaline, fibrous, and elastic cartilage. Hyaline cartilage is the most widespread type and resembles glass.
Where is fibrocartilage found?
Fibrocartilage is a dense, whitish tissue with a distinct fibrous texture. It forms the intervertebral discs of the spine and menisci of the knee,as well as smaller structures such as the glenoid and acetabular labra, and the lining of bony grooves for tendons.
Where is elastic cartilage found?
Elastic cartilage is located in the pinna of the ear, external and internal auditory tubes, epiglottis, and larynx (cuneiform cartilage).
What is the hyaline cartilage?
Hyaline cartilage, the most widely distributed form, has a pearl-gray semitranslucent matrix containing randomly oriented collagen fibrils but relatively little elastin. It is normally found on surfaces of joints and in the cartilage making up the fetal skeleton.
Is cartilage part of the skeletal system?
The skeletal system is your body's central framework. It consists of bones and connective tissue, including cartilage, tendons, and ligaments. It's also called the musculoskeletal system.
What is the difference between hyaline cartilage and fibrocartilage?
The main difference between fibrocartilage and hyaline cartilage is that fibrocartilage is stiff and contains many collagen fibers whereas hyaline cartilage is a soft cartilage that contains fewer fibers.
Which cartilage is least abundant?
Hyaline cartilage The collagen fibres are hard to see in sections. It has a perichondrium, and it is the weakest of the three types of cartilage. Look at the eMicroscope of a section of cartilage on the left. Make sure you can identify chondrocytes, the lacunae, matrix and perichondrium.
Where is yellow elastic cartilage found?
external earElastic cartilage, which is yellow in appearance, is more pliable than the other two forms because it contains elastic fibres in addition to collagen. In humans it makes up the external ear, the auditory tube of the middle ear, and the epiglottis.
Where is hyaline cartilage found quizlet?
Hyaline cartilage is the main type of cartilage found supporting and reinforcing body structures and joints. It covers the ends of long bones in joint cavities, it is found on the ends of the ribs that join the sternum, it supports the trachea, nose and most of the voice box or larynx.
What are the different types of cartilage?
There are three major types of cartilage: hyaline cartilage, fibrocartilage, and elastic cartilage. Hyaline cartilageis the most widespread cartilage type. It is predominately collagenand contains no nerves or blood vessels, and its structure is relatively simple.
Which cell is responsible for maintaining cartilage?
chondrocytes: cells that form and maintain the cartilage. extracellular matrix:the non-cellular component present within all tissues and organs, and provides not scaffolding and biochemical reactions. avascular: there are no vessels to carry blood to cartilage tissue. cartilage:rubber-like padding that covers and protects the ends ...
Why is elastic cartilage flexible?
Elastic cartilage has great flexibility so it can withstand repeated bending. Key Points. • Cartilage is a flexible connective tissue that differs from the bone in several ways; it has no blood vessels, and its microarchitecture is less organized than bone; it relies on diffusion to obtain nutrients and heals very slowly.
What is the name of the flexible connective tissue that provides support and cushioning for adjacent tissues?
Cartilage is a flexible connective tissue located throughout the body that provides support and cushioning for adjacent tissues; it has no blood vessels. Cartilageis a flexible connective tissue. Its primary cell types are chondrocytes.
What is the role of chondrocytes in cartilage?
Chondrocytes produce the collagenextracellular matrix(ECM) and then get caught in the matrix. Cartilage is avascular, there are no vessels to carry blood to cartilage tissue, they rely on diffusion to obtain nutrients. This lack of blood supply causes cartilage to heal very slowly compared with bone.
What is the function of connective tissue?
connective tissue: a type of tissue found in animals whose main function is to bind other tissue systems (such as muscle to the skin) or organs. hyaline cartilage: a type of cartilage found on many joint surfaces; it contains no nerves or blood vessels, and its structure is relatively simple.
What is the most abundant type of cartilage?
Cartilage is a flexible connective tissue found in multiple areas of the body, including joints, the ear and nose, and intervertebral discs. Hyaline cartilage, the most abundant type of cartilage, plays a supportive role and assists in movement.
Where is cartilage found?
Cartilage is a robust and viscoelastic connective tissue that can be found in joints between bones, the rib cage, intervertebral discs, the ear, and the nose. While more rigid and less flexible than muscle, cartilage is not as stiff as bone. These properties allow cartilage to serve as a support structure for holding tubes open or ...
What is the articular cartilage of the elbow?
Articular cartilage of the elbow (sagittal view) The function of articular cartilage is dependent on the molecular composition of the extracellular matrix (ECM), which consists mainly of proteoglycans and collagen.
Why is cartilage so slow to repair?
Moreover, cartilage has a very slow turnover and is difficult to repair due to the fact that cartilage tissue is avascular (and also aneural ). Its growth is not usually quantified by an increase in size or mass of the cartilage itself, but instead by its biomechanical properties. Chondrocytes (histological slide)
What are the cells that make up the cartilage matrix?
The chondroblasts that are caught in the matrix are called chondrocytes, and are the main type of specialized cells found in cartilage. Chondrocytes are responsible for producing large quantities of collagenous extracellular matrix and ground substance that is rich in proteoglycans and elastin fibers.
Why does cartilage breakdown occur?
Damage or injury can also happen through pathologic states, where ossification or breakdown of cartilage occurs due to dysfunction of cartilage-specific cells or synovial cells, or imbalances in the microenvironment surrounding the cartilage . Cartilage has limited reparative capacities for a number of reasons:
How does ECM affect cartilage?
Therefore, when this ECM is affected, it can lead to damage or injury. This can happen through physical mechanical forces, where excessive friction and applied forces wear down the cartilage (e.g. due to overuse or traumatic injury during athletics). Damage or injury can also happen through pathologic states, where ossification or breakdown of cartilage occurs due to dysfunction of cartilage-specific cells or synovial cells, or imbalances in the microenvironment surrounding the cartilage.
