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A tendon sheath    is similar in structure to a bursa, but smaller. It is a connective tissue sac that surrounds a muscle tendon at places where the tendon crosses a joint. It contains a lubricating fluid that allows for smooth motions of the tendon during muscle contraction and joint movements.

Homeostatic imbalances

Bursitis

Bursitis is the inflammation of a bursa near a joint. This will cause pain, swelling, or tenderness of the bursa and surrounding area, and may also result in joint stiffness. Bursitis is most commonly associated with the bursae found at or near the shoulder, hip, knee, or elbow joints. At the shoulder, subacromial bursitis may occur in the bursa that separates the acromion of the scapula from the tendon of a shoulder muscle as it passes deep to the acromion. In the hip region, trochanteric bursitis can occur in the bursa that overlies the greater trochanter of the femur, just below the lateral side of the hip. Ischial bursitis occurs in the bursa that separates the skin from the ischial tuberosity of the pelvis, the bony structure that is weight bearing when sitting. At the knee, inflammation and swelling of the bursa located between the skin and patella bone is prepatellar bursitis (“housemaid’s knee”), a condition more commonly seen today in roofers or floor and carpet installers who do not use knee pads. At the elbow, olecranon bursitis is inflammation of the bursa between the skin and olecranon process of the ulna. The olecranon forms the bony tip of the elbow, and bursitis here is also known as “student’s elbow.”

Bursitis can be either acute (lasting only a few days) or chronic. It can arise from muscle overuse, trauma, excessive or prolonged pressure on the skin, rheumatoid arthritis, gout, or infection of the joint. Repeated acute episodes of bursitis can result in a chronic condition. Treatments for the disorder include antibiotics if the bursitis is caused by an infection, or anti-inflammatory agents, such as nonsteroidal anti-inflammatory drugs (NSAIDs) or corticosteroids if the bursitis is due to trauma or overuse. Chronic bursitis may require that fluid be drained, but additional surgery is usually not required.

Types of synovial joints

Synovial joints are subdivided based on the shapes of the articulating surfaces of the bones that form each joint. The six types of synovial joints are pivot, hinge, condyloid, saddle, plane, and ball-and socket-joints ( [link] ).

Types of synovial joints

This composite image shows the different types of synovial joints in the body. In the center of the figure is a skeleton, and call outs from each joint show their names and locations.
The six types of synovial joints allow the body to move in a variety of ways. (a) Pivot joints allow for rotation around an axis, such as between the first and second cervical vertebrae, which allows for side-to-side rotation of the head. (b) The hinge joint of the elbow works like a door hinge. (c) The articulation between the trapezium carpal bone and the first metacarpal bone at the base of the thumb is a saddle joint. (d) Plane joints, such as those between the tarsal bones of the foot, allow for limited gliding movements between bones. (e) The radiocarpal joint of the wrist is a condyloid joint. (f) The hip and shoulder joints are the only ball-and-socket joints of the body.

Questions & Answers

to know how you body function to know the relationship between the body parts to know specific functions of a certain body parts
romeo Reply
To know our body function we shd know chemical secretion of our glands, we can map all the function of our body and also relation ship between the body parts.
KUSUMA
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kanaku
can you get fungi infection by seating on a public toilet?
Calls Reply
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Rymz Reply
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fat deficiency in the body
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Explain how body exercise regulates blood pressure
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Thelma
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what are the proceduers of condactive system ?
Salua Reply
please, is cell the only smallest particle in de human body
Chibuzor Reply
what are the function of the epithelial tissues
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Zulpha
secretion, absorption ,protection
Nakyondwa
meaning of ossification
Nakyondwa
osteogenesis or bone formation
Veterinary
pls what is DVT
Ngwani
deep vein thrombosis
Angel
throbbing or cramping pain in 1 leg (rarely both legs), usually in the calf or thigh. swelling in 1 leg (rarely both legs) warm skin around the painful area. red or darkened skin around the painful area. swollen veins that are hard or sore when you touch them.
zinet
Epithelial tissues are widespread throughout the body. They form the covering of all bodysurfaces, line body cavities and hollow organs, and are the major tissue in glands. They perform a variety of functions that include protection, secretion, absorption,excretion, filtration, diffusion, and sensor
Ziya
diagram of a neuron
Emmanuel Reply
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from where the mixture(collagen & glycoprotein) of basal lamina is secreted?
kiran Reply
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kanaku
what a the 4 proximal bones
kanaku
The proximal end of the radius articulates in both the elbow and proximal radioulnar joints. ... Neck – A narrow area of bone, which lies between the radial head and radial tuberosity. Radial tuberosity – A bonyprojection, which serves as the place of attachment of the biceps brachii muscle.
Ziya
why is the pancreas refer to as an endocrine and exocrine gland
tang Reply
what is a malignancy
tang
malignancy" refers to the presence of cancerous cells that have the ability to spread to other sites in the body (metastasize) or to invade nearby (locally) and destroy tissues
muhammad
Hi, pancreas is a basic organ
Douglas
the intramembranous ossification are developed from membrane whiles the endochondral ossification developed from cartilage
Helena Reply
primary ossification begins at the center of diaphysis while the secondary is the bone growth after birth that occurs at the epiphyseal disc
Helena
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rapisanai
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Nigel
why is interstitial fluid refered to as the internal environment of a body?
SAID Reply
?
Vincent
this is because it contains 95% of water which can the body tissues
korobe
because it's located inside the cells
Chimkaha
It makes up ground substance
Douglas

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Source:  OpenStax, Anatomy & Physiology. OpenStax CNX. Feb 04, 2016 Download for free at http://legacy.cnx.org/content/col11496/1.8
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