What is bone surface markings?
Bone markings are projections and depressions found on bones, which help us to identify the location of other body structures, such as muscles. Their importance comes when we try to describe the shape of the bone or to understand how the muscles, ligaments and other structures affect this bone and vice versa.
Where is the humerus bone located?
humerus, long bone of the upper limb or forelimb of land vertebrates that forms the shoulder joint above, where it articulates with a lateral depression of the shoulder blade (glenoid cavity of scapula), and the elbow joint below, where it articulates with projections of the ulna and the radius.
What are common bone markings?
There are three general classes of bone markings: (1) articulations, (2) projections, and (3) holes. As the name implies, an articulation is where two bone surfaces come together (articulus = “joint”).
What is the name of marked bone?
As the name implies, an articulation is where two bone surfaces come together (articulus = “joint”)….Learning Objectives.
| Bone Markings (Table 7.2) | ||
|---|---|---|
| Marking | Description | Example |
| Facet | Flat surface | Vertebrae |
| Condyle | Rounded surface | Occipital condyles |
| Projections | Raised markings | Spinous process of the vertebrae |
What is the main function of humerus?
Function. The humerus serves as an attachment to 13 muscles which contribute to the movements of the hand and elbow, and therefore the function of the upper limb.
What bone marking is an outgrowth from a bone?
Protuberance
| Common Terms Used For Features of Bones (and other aspects of anatomy) | ||
|---|---|---|
| Term | Description | Example |
| Protuberance | A bony outgrowth or protruding part | Mental protuberance of the chin |
| Spine | A sharp, slender, or narrow process | Spine of the scapula |
| Trochanter | Two massive processes unique to the femur |
What is the bone marking that is a narrow groove?
Sulcus. Narrow groove. Crest. Narrow, prominent, ridgelike projection.
Is a tubercle a projection or depression?
| MARKING | EXAMPLE | |
|---|---|---|
| Trochanter | Very large projection | Greater trochanter of the femur |
| Tubercle | Small rounded knob-like projection | Greater tubercle of the humerus |
| Tuberosity | Large, rounded usually roughened projection | Ischial tuberosity of the hip bone |
| Misc Terms |
How are bone markings formed?
Labeled Bone Markings, Examples of processes formed where tendons or ligaments attach, processes formed to articulate with adjacent bones, elevation or depressions, and openings.
What does a humerus bone tell?
Your humerus is the long bone in your upper arm. The connections it makes at the shoulder and elbow enable you to make many different arm movements. The humerus is also a connection point for arm and shoulder muscles . Humerus fractures are a common injury that are often caused by falls, car accidents, or contact sports.
What are the bony landmarks of the humerus?
Bony Landmarks of Humerus. The infraspinatus, supraspinatus, and teres minor muscles attach to this elevation. Lesser Tubercle is a roughened area found medial to the greater tubercle. It serves as the insertion site subscapularis muscle. Intertubercular Groove is a thin, longitudinal depression between the lesser and greater tubercles.
How painful is a broken humerus?
A broken upper arm (fractured humerus) can be extremely painful, so much so that you may feel sick, dizzy or faint. Other symptoms of a broken upper arm are: You will be unable to use your arm. Your elbow or upper arm may be swollen. Your elbow or upper arm may bruise. If it is a very severe break, your arm may be a different shape.
What bone articulates medially with humerus?
Humerus is a typical long bone present in the arm that articulates proximally with the scapula and distally with the bones of the forearm, namely, radius and ulna.