This topic contains a solution. Click here to go to the answer

Author Question: Why is the inferior region of the shoulder joint most vulnerable to ... (Read 42 times)

piesebel

  • Hero Member
  • *****
  • Posts: 565
Why is the inferior region of the shoulder joint most vulnerable to dislocation?

Question 2

When the triceps brachii muscle contracts, what movements does it produce?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

kaillie

  • Sr. Member
  • ****
  • Posts: 326
Answer to Question 1

The anterior, superior, and posterior surfaces of the shoulder joint are reinforced by ligaments, muscles, and tendons, but the inferior capsule is poorly reinforced. As a result, a dislocation caused by an impact or a violent muscle contraction is most likely to occur at this site. Such a dislocation can tear the inferior capsular wall and the glenoid labrum.

Answer to Question 2

The triceps brachii attaches to the olecranon process. Contraction of the triceps brachii muscle causes the ulna to rotate around the distal humerus, causing extension of the forearm.




piesebel

  • Member
  • Posts: 565
Reply 2 on: Feb 28, 2019
Wow, this really help


anyusername12131

  • Member
  • Posts: 327
Reply 3 on: Yesterday
Excellent

 

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

For a complete list of videos, visit our video library