What are the different classifications of connective tissue?
Classification
- dense regular connective tissue which is found in tendons and ligaments, and is shown below.
- cartilage – (see the topic on bone and cartilage)
- adipose tissue (see adipose cells)
- haemopoietic tissue (bone marrow, lymphoid tissue)
- blood (see the topic on blood)
- bone (see the topic on bone and cartilage)
What are the different classifications of connective tissue and their functions?
Connective tissue is classified into two subtypes: soft and specialized connective tissue. Major functions of connective tissue include: 1) binding and supporting, 2) protecting, 3) insulating, 4) storing reserve fuel, and 5) transporting substances within the body.
What are the two main categories of connective tissues?
Connective tissue proper is found throughout the entire body. There are two subtypes of connective tissue proper; loose and regular. They differ in the structural layout of their extracellular matrix.
What are the four classifications of connective tissue?
Connective tissues are classified into four classes: BLOOD, BONE, CARTILAGE, CONNECTIVE TISSUE PROPER.
What are the five types of connective tissue?
Connective tissue proper includes: loose connective tissue (also called areolar) and dense (irregular) connective tissue. Specialized connective tissue types include: dense regular connective tissue, cartilage, bone, adipose tissue, blood, and hematopoietic tissue.
Is a tendon a connective tissue?
A tendon is a fibrous connective tissue which attaches muscle to bone. Tendons may also attach muscles to structures such as the eyeball.
What are the 3 layers of connective tissue around a nerve?
In a peripheral nerve, the individual nerve fibres are organised by connective tissue that consists of three distinct components, called endoneurium, perineurium, and epineurium.
What is the deepest connective tissue layer of a nerve?
The epineurium is the outermost layer of dense irregular connective tissue surrounding a peripheral nerve. It usually surrounds multiple nerve fascicles as well as blood vessels which supply the nerve. Smaller branches of these blood vessels penetrate into the perineurium.
How can nerves be classified?
Nerves can be categorized as afferent, efferent, and mixed based on the direction of signal transmission within the nervous system. Nerves can be further categorized as spinal nerves or cranial nerves based on where they connect to the central nervous system.
What are the different types of nerve fibers?
Nerve fibers are classed into three types – group A nerve fibers, group B nerve fibers, and group C nerve fibers. Groups A and B are myelinated, and group C are unmyelinated. These groups include both sensory fibers and motor fibers.
What type of connective tissue is Perineurium?
The perineurium is composed from fibroblasts. In the peripheral nervous system, the myelin sheath of each axon in a nerve is wrapped in a delicate protective sheath known as the endoneurium. Fascicles, bundles of neurons, are surrounded by the perineurium….
| Perineurium | |
|---|---|
| TA2 | 6156 |
| FMA | 52585 |
| Anatomical terminology | |
Is lymph a connective tissue?
Blood and lymph are fluid connective tissues. Cells circulate in a liquid extracellular matrix.
What is the Neurilemma?
: the plasma membrane surrounding a Schwann cell of a myelinated nerve fiber and separating layers of myelin.
What are nodes of Ranvier?
The nodes of Ranvier are characterized by short (1um), specialized regions in the axonal membrane that are not insulated by myelin. Although it is bare of myelin at the node, the axon is in direct contact with the microvilli of the Schwann cells in the PNS, or with processes of astrocytes in the CNS (Figure 1).
What is the difference between Neurilemma and myelin sheath?
The key difference between Neurilemma and the myelin sheath is that Neurilemma is the cytoplasm and the nuclei of the Schwann cells lying outside the myelin sheath while Myelin sheath is a modified cellular membrane wrapped around the axon of the neurons.
Why Neurilemma is absent in CNS?
Neurilemma is the plasma membrane of Schwann cells that surrounds the myelinated nerve fibers of peripheral nervous system and is absent in the central nervous system due to the lack of myelin sheath due to absence of Schwann cells. Neurilemma serves a protective function for peripheral nerve fibers.