Lab Exercise 6: Shoulder and Upper Arm Flashcards
The muscle group of the upper back that originates on cervical vertebra 7 and thoracic vertebrae 1-5 and acts to adduct the scapula is the
rhomboideus group
A(n) ____ is a rounded process of a bone located at an articulation site. This feature of the humerus rests in a depression called the ________ of the scapula.
head, glenoid cavity or fossa
The muscle of the shoulder that originates on the posterior surface of the scapula above the spine is the
supraspinatus
The spine of the scapula forms a large lateral projection called the
acromion process
The muscle of the upper back and neck that originates on the occipital bone and the cervical and thoracic vertebrae which acts to shrug the shoulders and rotate the scapula is the
trapezius
The feature on the anterior, lateral region of the scapula is called the
coracoid process
The muscle of the chest that originates on the first 8-9 ribs and acts to rotate the scapula forward is the
serratus anterior
The medial end of the clavicle is also called the ______ and the lateral end of the clavicle is also called the _______
sternal end, acromial end
The muscle of the upper back and neck that inserts on the superior border of the scapula and acts to elevate the scapula is the
levator scapulae
The lateral border of the scapula is also called the _____ and the medial border of the scapula is also called the _____
axillary border, vertebral border
The deep muscle of the chest that originates on ribs 3-5 and inserts on the coracoid process of the scapula is the
pectoralis minor
The raised area in the middle of the diaphysis of the humerus is called the
deltoid tuberosity
The muscle of the shoulder which originates on the clavicle and scapula and acts to abduct, flex, and
extend the upper arm is the
deltoid
Small, knob-like processes on bones are called tubercles. On the humerus these are found just distal to the neck of the humerus and are called the
greater and lesser tubercles
The muscle of the shoulder that originates on the coracoid process of the scapula and inserts on the shaft of the humerus is the
coracobrachialis
The ________ fossa is on the anterior surface of the scapula. The_____ fossa and ______ fossa are on the posterior surface of the scapula.
subscapular, supraspinous, infraspinous
The superficial muscle of the chest that inserts on the intertubercular groove of the humerus and adducts the upper arm is the
pectoralis major
Moving a body part such that its end following a circular bath is called _____ This motion is possible at condylar and ball and socket joints only.
circumduction
The large muscle of the back that inserts on the intertubercular groove of the humerus and acts to extend and adduct the upper arm is the
latissimus dorsi
When classified according to shape, the humerus is an example of a
long bone
The muscle of the shoulder that originates on the posterior surface of the scapula below the spine is the
infraspinatus
Moving a body part away from the midline of the body is called_____ while
moving that body part back toward the midline of the body is called______.
This motion is possible at the ______ joint formed between the humerus and scapula.
abduction, adduction, ball and socket
The muscle that originates on the anterior surface of the scapula and acts to rotate the upper arm medially is the
subscapularis
All muscles that rotate the upper arm laterally insert on the_____ tubercle,
whereas all muscles that rotate the upper arm medially insert on either the _____ tubercle or on the _____Therefore, the teres ______muscle inserts on the greater tubercle and the teres ____ muscle inserts on the lesser
tubercle.
greater, lesser, intertubercular groove, minor, major
