What is the definition of a latissimus dorsi muscle?
The latissimus dorsi muscle, whose name means “broadest muscle of the back,” is one of the widest muscles in the human body. The muscle runs between the trunk, via an extensive attachment and the humerus by a narrow tendon. It therefor, acts on the shoulder joint.
What does latissimus dorsi mean in Latin as discussed in class?
The word latissimus dorsi (plural: latissimi dorsi) comes from Latin and means “broadest [muscle] of the back”, from “latissimus” (Latin: broadest)’ and “dorsum” (Latin: back). The pair of muscles are commonly known as “lats”, especially among bodybuilders. The latissimus dorsi is the largest muscle in the upper body.
What is the latissimus dorsi responsible for?
Functionally, the latissimus dorsi muscle belongs to the muscles of the scapular motion. This muscle is able to pull the inferior angle of the scapula in various directions, producing movements on the shoulder joint; internal rotation, adduction and extension of the arm.
How do you remember the latissimus dorsi?
The actions of the latissimus dorsi are easy to remember if you can remember that it’s the handcuff muscle. If you were being arrested and handcuffed (and I hope you never are), your arms would be medially rotated, a little bit extended and also adducting across the midline behind you.
What is the definition of pectoralis?
Pectoralis muscle, any of the muscles that connect the front walls of the chest with the bones of the upper arm and shoulder. There are two such muscles on each side of the sternum (breastbone) in the human body: pectoralis major and pectoralis minor.
What does the word latissimus in its name tell us?
The name of the latissimus dorsi muscle comes from the Latin words latissimus, which means ‘broadest’, and dorsum, which means ‘back’. Therefore, latissimus dorsi simply means ‘broadest muscle of the back. ‘ Oftentimes, it’s simply known as the ‘lat’ muscle.
What does the LAT do?
The latissimus dorsi muscles, known as the lats, are the large V-shaped muscles that connect your arms to your vertebral column. They help protect and stabilize your spine while providing shoulder and back strength. Your lats also help with shoulder and arm movement and support good posture.
What do the lats do?
What does dorsi mean in anatomy?
dorso- , dorsi-, dors- Prefixes meaning theback or dorsum.
What does gluteus mean?
the buttocks
: any of the large muscles of the buttocks especially : gluteus maximus.
What kind of muscle is the latissimus dorsi?
: a broad flat superficial muscle chiefly of the middle and lower back that extends, adducts, and rotates the arm medially and draws the shoulder downward and backward.
Which is the correct definition of the term latissimi dorsi?
plural latissimi dorsi\\ lə-ˈti-sə-ˌmī-ˈdȯr-sī \\. : a broad flat superficial muscle chiefly of the middle and lower back that extends, adducts, and rotates the arm medially and draws the shoulder downward and backward.
What kind of muscle is the lat muscle?
Also known as the “lat,” it is a large, flat triangular muscle that is not used strenuously in common daily activities but is an important muscle in many exercises such as pull-ups, chin-ups, lat pulldowns, and swimming. The muscle runs between the trunk, via an extensive attachment and the humerus by a narrow tendon.
Where does latissimus dorsi cross the axillary space?
A slip extending from latissimus dorsi may cross the axillary space to the tendon of pectoralis major and has been named axillary arch, achselbogen, or pectorodorsalis muscle. The axillary arch may be fused with teres major.