A tubercle is a small rounded point of a bone. It also refers to a nodule attached to bone, mucous membrane (moist layer lining parts of the body), or skin. The term tubercle is less commonly used to refer to skin irritation resulting from a tuberculosis (TB) infection.

Where is the tubercle?

Ribs. On a rib, tubercle is an eminence on the back surface, at the junction between the neck and the body of the rib. It consists of an articular and a non-articular area.

What is the meaning of tubercle in English?

Definition of tubercle

1 : a small knobby prominence or excrescence especially on a plant or animal : nodule: such as. a : a protuberance near the head of a rib that articulates with the transverse process of a vertebra.

What is the function of the tubercle?

In the human skeleton, a tubercle or tuberosity is a protrusion that serves as an attachment for skeletal muscles. The muscles attach by tendons, where the enthesis is the connective tissue between the tendon and bone.

What is a tubercle and trochanter?

Trochanter – A large prominence on the side of the bone. Some of the largest muscle groups and most dense connective tissues attach to the trochanter. The most notable examples are the greater and lesser trochanters of the femur. Tuberosity – A moderate prominence where muscles and connective tissues attach.

Where is the Diaphysis?

The central tubular region of the bone, called the diaphysis, flares outward near the end to form the metaphysis, which contains a largely cancellous, or spongy, interior. At the end of the bone is the epiphysis, which in young people is separated from the metaphysis by the physis, or growth plate.

How does a tubercle form?

In most forms of the disease, the bacillus spreads slowly and widely in the lungs, causing the formation of hard nodules (tubercles) or large cheeselike masses that break down the respiratory tissues and form cavities in the lungs.

What’s the difference between a tubercle and tuberosity?

Tubercle vs tuberosity

A tubercle is a small rounded prominence, often a site of tendon or ligament attachment e.g. adductor tubercle of the femur. A tuberosity is larger, found in varying shapes and often rough in texture. The ulnar tuberosity is one example.

What is the tubercle of rib?

Tubercle. The tubercle, immediately after the neck, is a prominence on the external surface of the rib which contains a medial facet that articulates with the transverse process of the numerically corresponding vertebra. This area is called the articular part.

What is a tubercle quizlet?

Tubercle. A small, rounded projection. Tuberosity. Large rounded projection; may be roughened.

What is a tubercle microbiology?

Once the bacterium has gained entry into a macrophage and triggered that host cell to invade the tissue of the lung, the host responds by remodelling the site of infection into a cellular mass, the ‘tubercle’ or granuloma that has given the disease its name.

What bones have a tubercle?

The examples of tubercles include the scalene tubercle on the first rib and the Chassaignac’s tubercle on the cervical vertebrae. In brief, tuberosity and tubercle are two types of protrusions or eminences in the bones of the human skeleton. And, their function is to serve as an attachment for skeletal muscles.

What are the inflammatory cells making a tubercle?

A tubercle usually consists of a centre of dead cells and tissues, cheeselike (caseous) in appearance, in which can be found many bacilli. This centre is surrounded by radially arranged phagocytic (scavenger) cells and a periphery containing connective tissue cells.

What is the difference between tubercle and spine?

is that spine is a person or thing’s backbone; the series of bones collectively from one’s (literal or figurative) head to tail or pelvis while tubercle is (anatomy) a round nodule, small eminence, or warty outgrowth, especially those found on bones for the attachment of a muscle or ligament or small elevations on the

Where is the deltoid tubercle?

The deltoid tuberosity of the humerus lies proximally about a third of the way to the elbow and provides an attachment point for the deltoid muscle. The deltoid is a triangular muscle with three attachment points: the humerus, the clavicle, and the scapula.

What is a condyle anatomy?

Definition of condyle

: an articular prominence of a bone especially : one resembling a pair of knuckles.