What is the main humerus function?
What is the main humerus function?
The humerus is a long bone located in the upper arm, between the shoulder joint and elbow joint. The humerus provides structural support to the arm and is an insertion point for many important muscles in the upper body, such as pectoralis major, latissimus dorsi, rotator cuff muscles, and more.
What are the major processes of the humerus?
The body is cylindrical in its upper portion, and more prismatic below. The lower extremity consists of 2 epicondyles, 2 processes (trochlea & capitulum), and 3 fossae (radial fossa, coronoid fossa, and olecranon fossa).
What type of bone is the humerus?
long bone
Your humerus is classified as a long bone. Other types of long bones include the radius and ulna in your forearm and the femur in your upper leg. Speaking of long, the humerus is the longest bone in your arm.
How long does it take for a broken humerus to stop hurting?
It will take a minimum of 12 weeks to heal. Patients may be on pain relief medications for a longer duration.
Is it hard to break your humerus?
Breaking one or both of your forearm bones, particularly at the wrist, is fairly common; breaking your upper arm bone is much less common. If you do break your upper arm bone (humerus), it is most likely to break at the top – 6 times out of 10 this is where the upper arm bone breaks.
What muscles connect to the humerus?
The pectoralis major, latissimus dorsi, deltoid, and rotator cuff muscles connect to the humerus and move the arm.
What muscles insert on the humerus?
The following muscles attach to the humerus along its shaft:
- Anteriorly – coracobrachialis, deltoid, brachialis, brachioradialis.
- Posteriorly – medial and lateral heads of the triceps (the spiral groove demarcates their respective origins).
What muscles attach to the humerus?
Muscle Attachments
| Muscle | Attachment |
|---|---|
| Infraspinatus | Greater Tubercle |
| Teres Minor | Greater Tubercle Upper Part of the Lateral Border |
| Subscapularis | Lesser Tubercle |
| Pectoralis Major | Upper Part of the Anterior Border |
What muscles originate on the humerus?
The muscles in the superficial posterior compartment of the forearm (superficial posterior extensor compartment of the forearm) originate on the humerus. These are the extensor radialis longus, extensor carpi radialis brevis,extensor digitorum, extensor digiti minimi, and the extensor carpi ulnaris.
Why is the humerus called the funny bone?
It may be based on the sound resemblance between the name of the upper arm bone, the “humerus” and the word “humorous”, used to describe something funny. It may also refer to the odd sensation you get when it is struck.
Is there an idiom for having a funny bone?
For example, speaking about someone lacking the sense of humor, would it be “He has no funny bone”, or “He has his funny bone broken/missing”, or “he’s lost his funny bone”, or what else might it be? I don’t think there’s any standard negation for “funny bone”, so how you choose to play off of this idiom depends entirely on your own wit.
Why is the ulnar nerve called a funny bone?
The job of the ulnar nerve is to tell the brain what is happening in those two fingers. One theory KidsHealth provides on the funny bone name suggests it comes from the weird or “funny” feeling you get when you accidentally slam your funny bone into something.
Where is the funny bone in your arm?
The “funny bone” is the spot at the back of your elbow where the ulnar nerve (one of the three main nerves in the arm) rests against the humerus (upper arm bone). The ulnar nerve runs from your shoulder into your hand, where it is mostly protected by bones, muscles and/or ligaments.