Appendicular skeleton

Question 1

What is it and how many bones

Answer 1

-upper and lower extremities eg. limbs
-126 bones

Question 2

Pectoral girdle
what is it, anatomical structures

Answer 2

-the bony structure on either side of the body that connects the arm to the upper portion of the axial skeleton
-sternum joined to clavicle by sternoclavicular joint
-clavicle joined to scapula by acromioclavicular joint
-humerus joined to scapula by glenohumeral joint

Question 3

Clavicle structure

Answer 3

-medial end= sternal end
-lateral end= acromial end
-near sternal end there’s an impression for the costoclavicular ligament
-near acromial end there’s a conoid tubercle (bony prominence on the inferior surface)

Question 4

3 bones in hand

Answer 4

-palm= carpals/ wrist
-first finger joint= metacarpals
-rest of finger= phalanges

Question 5

Male pelvis

Answer 5

-male is larger, heavier, narrower than female
-male has smaller inlet and outlet
-male has pubic arch angle of less than 90

Question 6

Female pelvis

Answer 6

-rounder with flared iliac crest
-wider opening for child birth
-pubic arch angle greater than 90
-more flexible coccyx

Question 7

5 classifications of bones

Answer 7

-flat eg. scapula
-long eg. femur
-short eg. trapezoid
-irregular eg. vertebrae
-sesamoid eg. patella

Question 8

Spongy bone

Answer 8

-RBC production (hemopoiesis)
-trabeculae= lamellae arranged in lattice of thin columns
-spaces between trabeculae make bone lighter
-trabeculae protect red bone marrow
-lack osteon

Question 9

Compact bone

Answer 9

-resist stresses produced by weight and movement
-arranged into repeating structural units called osteons or haversian systems
-osteons consist of a central canal

Question 10

Lower arm bones and where they are

Answer 10

-radius= side of thumb
-ulna= side of pinky

Question 11

8 carpal bones

Answer 11

Stop Letting Those People
(proximal row)
Touch The Cat’s Hand
(distal row)
From lateral to medial
-scaphoid
-lunate
-triquetrum
-pisiform
-trapezium
-trapezoid
-capitate
-hamate

Question 12

Pelvic girdle

Answer 12

-hip bone= ears
-sacral promontory= central
-sacroiliac joint= joins hip bone and sacral promontory
-coccyx= below sacral promontory
-pubic symphysis= below coccyx

Question 13

3 bones in feet

Answer 13

-tarsal= near ankle
-metatarsal
-phalanges

Question 14

Bones in lower leg

Answer 14

-tibia= main shin bone
-fibula= behind tibia