BIOS251 Anatomy & Physiology I with Lab

Week 7 Chapter 9 Muscles in Motion – Shoulder

The shoulder (glenohumeral) joint is a ___________ synovial joint.

hinge

ball-and-socket

pivot

planar

Most of the strength in the shoulder joint comes from the ______________.

articular capsule

coracohumeral ligament

rotator cuff muscles

glenohumeral ligaments

Which of the following is NOT a rotator cuff muscle?

subscapularis

supraspinatus

teres minor

teres major

Which rotator cuff muscle originates on the subscapular fossa of the scapula and inserts on the lesser tubercle of the humerus?

teres minor

subscapularis

infraspinatus

supraspinatus

When all rotator cuff muscles are activated at the same time they act to hold the head of the humerus in the _______________.

glenoid cavity

acetabulum

coracoid process

acromion

The teres major and __________ act synergistically to extend the shoulder.

coracobrachialis

pectoralis major

latissimus dorsi

supraspinatus

During the downswing, a right-handed batter’s right shoulder ___________ as the left shoulder __________________.

abducts and extends ; adducts and extends

adducts and extends ; abducts and extends

abducts and flexes; adducts and flexes

adducts and flexes; abducts and flexes

The pectoralis major and _____________ are the prime movers of shoulder adduction.

supraspinatus

deltoid

coracobrachialis

supraspinatus

The deltoid muscle inserts on the ___________ of the humerus.

head

greater tubercle

lesser tubercle

deltoid tuberosity

The ___________ is a rim of fibrocartilage that slightly deepens the glenoid cavity.

glenoid labrum

bursa

coracoid process

rotator cuff

 

 

MORE INFO 

Muscles in Motion – Shoulder

Introduction

The shoulder has a lot of muscles, but that doesn’t mean you can’t build yours up! In this post we’ll look at some of the most important muscles in the shoulder area and how they contribute to your everyday life.

The shoulder is the most versatile joint in the body.

The shoulder is a ball and socket joint. It allows for a wide range of motion, giving you more flexibility in your shoulders than any other joint in the body. This means that if something happens to your shoulder, there are many ways to get around it!

If you’re curious about how much exercise can help with injuries like stiff shoulders or pain from overuse injuries like rotator cuff tears then check out our article on how much exercise is too much for your body type here: https://www.wisegeekhealthtips/how-much-exercise-is-too-much/.

The shoulder has a lot of muscles.

The shoulder has a lot of muscles. In fact, it’s one of the most versatile joints in the body. There are 20 different muscles attached to, or near, your shoulder joint (the rotator cuff). These muscles have to work together to move your arm from side-to-side and up and down as well as around in circles when you raise an arm above your head or put weight on it during exercise.

The main reason why this complex set of muscles works so well is because they’re all connected together by tendons that allow them all to work together without interfering with each other’s function. The rotator cuff is a group of four small muscles and tendons that surround the shoulder joint so they can help hold up your arm while moving it around—they also keep those other parts intact during everyday activities like reaching over furniture or putting groceries away!

You use your shoulders for almost everything you do, from putting on clothes to lifting weights.

You use your shoulders for almost everything you do, from putting on clothes to lifting weights. In fact, the shoulder is one of the most important muscles in your body because it helps with so many daily tasks.

You use your shoulders for almost everything you do, from putting on clothes to lifting weights. In fact, the shoulder is one of the most important muscles in your body because it helps with so many daily tasks.

The pectoralis major and deltoid are the two largest muscles in the shoulder area and together they allow us to move our arms forward, backward, and outward.

The pectoralis major and deltoid are the two largest muscles in the shoulder area, making up your chest and shoulders. Together they allow you to move your arms forward, backward, and outward.

The pectoralis major is a fan-shaped muscle that covers the front of the chest. It has attachments on both sides of your body along with tendons running down through it so that when you move one arm or leg at a time (for example when putting on clothes or grabbing something), there is no way for this muscle group alone to do all those things at once!

This means that if one part gets tired then other parts have to pick up some slack until we can rest again before continuing on with whatever activity we’re doing.”

The rotator cuff is a group of four small muscles and tendons that surround the shoulder joint and allow your arm to move upward.

The rotator cuff is a group of four small muscles and tendons that surround the shoulder joint and allow your arm to move upward. These are important for shoulder movement, which can be affected by injury or overuse.

The rotator cuff consists of:

• The subscapularis tendon (part of your supraspinatus muscle)

• The infraspinatus tendon (part of your supraspinatus muscle) and the teres minor, subscapularis fibers.

There are 20 different muscles attached to, or near, your shoulder joint.

There are 20 different muscles attached to, or near, your shoulder joint. The shoulder is a ball and socket joint that allows you to move your arms forward, backward, and outward.

The human body has four major joints: elbow (with two bones), knee (with three bones), ankle (with two bones) and wrist (one bone). However there are also some less obvious joints such as the scapula which connects with the humerus or arm bone; pectoralis major which connects with clavicle bone; latissimus Dorsi which runs along side scapula; biceps brachii muscle group runs across front of upper arm from shoulder to elbow joint; triceps brachii muscle group runs down back side of upper arm from shoulder to elbow joint

Your strength is in your shoulders!

The shoulder is the most versatile joint in the body. It has a lot of muscles and you use them for almost everything you do from putting on clothes to lifting weights, so it’s important to know how to keep your shoulders strong.

The pectoralis major (PM) and deltoid (DL) are two of the largest muscles in this area. They work together with other muscles around them such as subscapularis and supraspinatus to help keep your arm held up while you’re doing something like pushing open a door or running away from an attacker!

Conclusion

We’re not trying to scare you, but if your shoulders aren’t strong enough then it could lead to injury. If you have pain in your shoulder, we suggest seeing your doctor so that they can figure out what exactly is causing the problem and fix it. The good news though? We know there are exercises for every kind of body!