Anatomy 2

Question 1

Ribs

Answer 1

1-7 true ribs
8-10 false ribs
11-12 floating
-made up of bone and costal cartilage

Question 2

Sternum

Answer 2

manubrium
sternal body
xiphoid process

Question 3

Head movement

Answer 3

C1-axis
C2-atlas
Function:allows the head to move

Question 4

Sternocleidomastoids

Answer 4

originates from sternum and clavicle
inserts on the temporal bone
Allows: to flex head forward

Question 5

erector spinae

Answer 5

sacrum to skull

Maintain head up, head falls down when unconscious

Question 6

Abdominal muscles

Answer 6

Trilaminar: 3 layers on top of eachother
Attach: Posteriorly: vertebral column, ribs, and hip bone
Anterior: Linea Alba
-important for lower back support

Question 7

Clavicle

Answer 7

rotates with sternum and scapula

Question 8

Pectoralis Major

Answer 8

1. Clavicular head: flexes and rotates the shoulder joint

2. Sternal Head: extends from flexed position and rotates shoulder joint

Question 9

Pectoralis Minor

Answer 9

Corocoid process of the scapula

• ribs 3-5
• depresses and stabilizes scapula

Question 10

Serratus interior

Answer 10

-steadies and holds scapula forward against chest wall

Actions: butterfly stroke

Question 11

Trapizeous

Answer 11

upper fibres: skull to scapula, elevate scapula, and shrugging shoulders
middle/transverse fibers: ligamentum nuchae of cervical vertebrae to scapula, retract scapula
Lower fibres: C7-T12 to scapula
-depress the scapula

Question 12

Subscapularis

Answer 12

• from axillary border of scapula
• to less turbecle of humerus
• adducts and medially rotates upper limb

Question 13

flexors

Answer 13

anterior

Question 14

extensors

Answer 14

posterior

Question 15

Bicep Brachii

Answer 15

• scapula to radial tuberosity

- elbow flexor and forearm supinator

Question 16

Brachialis

Answer 16

from anterior surface of humerus to ulnas coronoid process and ulnar tuberosity
-elbow flexor along with biceps

Question 17

Tricep brachii

Answer 17

Lateral head: from humerus posterior shaft
Long head: scapulas inferior glenoid tubercle

• all insert on ulna
• elbow extensor

Question 18

glenohumeral

Answer 18

humerous head and glenoid fossa

Question 19

Os coxae

Answer 19

paired hip bone, ilium, pubis, ishchiam

Question 20

acetabulum

Answer 20

cup-shaped groove for femur head

Question 21

gluteous maximus

Answer 21

• from ilium and sacrum to femur through iliotibial band
• hip extensor
• knee stabikizer in full extension

Question 22

gluteous minimus and medius

Answer 22

• from ilium to greater trochanter, lie deep and lateral to maximus
• hip abductors

Question 23

Sacroiliac

Answer 23

• fibrous and synovial
• unites sacrum to ilium bones
• stabilizes ligaments to sacrum

Question 24

Pubic Symphysis

Answer 24

• fibrocartilageous
• unites 2 pubic bones
• can become more elastic for birth

Question 25

Patella

Answer 25

-seasamoid bone

Question 26

medial malleolus

Answer 26

distal tibia end

Question 27

Lateral malleous

Answer 27

fibula end

Question 28

Tibialis anterior

Answer 28

• major anterior muscle

- foot invertor

Question 29

fibularis longus

Answer 29

• lateral fibula surface
• to lateral foot surface
• cross behind ankle

Question 30

fibularis brevis

Answer 30

• ankle plantar flexors
• foot everters
• allows to adapt to uneven ground when running

Question 31

Iliofemoral/actetabulofemoral joints (hip)

Answer 31

between femur head and hip bone

• flex/extension, adduct/abduct, circumduction
• most stable synovial joint, very strong

Question 32

Knee

Answer 32

structural support
fibrocalastic discs
intrinsic/extrinsic ligaments
surrounding musculature

Question 33

Talocural Joint (ankle)

Answer 33

-tibia and fibula, calcaneous
Dorsiflexion- moat stable position
Plantarflexion-least stable position