Ch 8

Question 0

Upper and lower limbs of appendicular skeleton

Answer 0

Upper has pectoral girdles and free upper limbs. Lower has pelvic girdles and free lower limbs. Arm upper, thigh lower

Question 1

Two main divisions of skeletal system

Answer 1

Axial like the core of the body helps protect organs and appendicular consists of upper and lower limbs function is movement

Question 2

Diff bt upper and lower limbs

Answer 2

Upper pelvic girdle of lower of firmly anchored to vertebral column via strong ligament joint. Pectoral girdles of upper do not for joints with vertebral column. They weakly join to axial skeleton via the clavicle(collar bone)

Question 3

Upper limb

Answer 3

Each upper limb has 32 bones which form the two regions pectoral girdle and free upper limb. Each of the two pectoral girdles have a clavicle and a scapula. Each ‘free’ upper limb has 30 bones in 3 locations, arm(humerus)forarm(ulna radius) hand(carpal bones and carpus(wrist). 5 medicarpal bones in the palm 14 phalanges in the fingers and thumb

Question 4

Function of pectoral girdle

Answer 4

Set if bones that connects the upper limb to the axial skeleton on each side(has clavicle and scapula)

Question 5

Clavicle

Answer 5

A shaped. Collar bone. Medial half is convex anteriorly( curves tword you) it’s also the arsenal end it’s rounded and articulates with sternum for sternoclavicukar joint. lateral half is concave( curves away) it’s broad and flat it articulates with a romain of scapula for acromoaclabicualr joint.

Question 6

Weakest part of clavicle

Answer 6

Mid region at the junction of the two curves.

Question 7

Scapula

Answer 7

Shoulder blade. There’s a ridge on the scapula called the ‘spine’ it runs diagonally across posterior surface of scapula. The lateral end of the spine is like a flattened expanded process called the ‘acromon’ it articulates with the a criminal end of the clavicle for the acromialclaviclar join. Inferior to the acromian is a shallow depression the ‘glenoid cavity’(weird round thing) it accepts the humerus to form the glenohumeral joint(shoulder joint)

Question 8

Other parts of scapula

Answer 8

(Medial vertebral border)-it’s thin and closer to vertebral column, (lateral axillary border)- thick closer to arm (superior border)- joins vertebral border at superior level (scapular notch) a depression a nerve passes through here. At (carocoid process) mistakes attach there are two fossae there’s supraspinous and infra spinous they serve as mustle attachment for shoulders

Question 9

Two main divisions of skeletal system

Answer 9

Axial like the core of the body helps protect organs and appendicular consists of upper and lower limbs function is movement

Question 10

Upper and lower limbs of appendicular skeleton

Answer 10

Upper has pectoral girdles and free upper limbs. Lower has pelvic girdles and free lower limbs. Arm upper, thigh lower

Question 11

Diff bt upper and lower limbs

Answer 11

Upper pelvic girdle of lower of firmly anchored to vertebral column via strong ligament joint. Pectoral girdles of upper do not for joints with vertebral column. They weakly join to axial skeleton via the clavicle(collar bone)

Question 12

Upper limb

Answer 12

Each upper limb has 32 bones which form the two regions pectoral girdle and free upper limb. Each of the two pectoral girdles have a clavicle and a scapula. Each ‘free’ upper limb has 30 bones in 3 locations, arm(humerus)forarm(ulna radius) hand(carpal bones and carpus(wrist). 5 medicarpal bones in the palm 14 phalanges in the fingers and thumb

Question 13

Function of pectoral girdle

Answer 13

Set if bones that connects the upper limb to the axial skeleton on each side(has clavicle and scapula)

Question 14

Clavicle

Answer 14

A shaped. Collar bone. Medial half is convex anteriorly( curves tword you) it’s also the arsenal end it’s rounded and articulates with sternum for sternoclavicukar joint. lateral half is concave( curves away) it’s broad and flat it articulates with a romain of scapula for acromoaclabicualr joint.

Question 15

Weakest part of clavicle

Answer 15

Mid region at the junction of the two curves.

Question 16

Scapula

Answer 16

Shoulder blade. There’s a ridge on the scapula called the ‘spine’ it runs diagonally across posterior surface of scapula. The lateral end of the spine is like a flattened expanded process called the ‘acromon’ it articulates with the a criminal end of the clavicle for the acromialclaviclar join. Inferior to the acromian is a shallow depression the ‘glenoid cavity’(weird round thing) it accepts the humerus to form the glenohumeral joint(shoulder joint)

Question 17

Other parts of scapula

Answer 17

(Medial vertebral border)-it’s thin and closer to vertebral column, (lateral axillary border)- thick closer to arm (superior border)- joins vertebral border at superior level (scapular notch) a depression a nerve passes through here. At (carocoid process) mistakes attach there are two fossae there’s supraspinous and infra spinous they serve as mustle attachment for shoulders

Question 18

Humerus

Answer 18

Arm bone. Upper one attached to shoulder. Largest of upper limb. Round by shoulders and flat end at elbow. Articulates with scapula and ulna and radius for elbow joint