Bone Markings

Question 1

name

Answer 1

olecranon process of ulna

Question 2

name and describe

Answer 2

Sella Turcica

bone marking on sphenoid bone

The sella turcica is a structure in the skull which is designed to support the pituitary gland. This important gland at the base of the brain releases a number of different hormones from its snugly positioned spot in the sella turcica. While the shape and size of the sella turcica can vary slightly, depending on the person and the age, it is usually very easy to recognize when one examines a skull, thanks to its distinctive appearance.

This structure is part of the sphenoid bone, an unpaired bone at the base of the skull which is often compared to a bird or butterfly, thanks to its rather unique shape. Parts of the sphenoid make up the orbit of the eye, and are also involved in the structure of the base of the skull, designed to be part of the hard case which protects the brain from trauma. The sella turcica is in the middle of the sphenoid, located just behind the cavity known as the sphenoid sinus, which places it around the middle of the base of the skull.

Question 3

name

Answer 3

medial malleolus of tibia

Question 4

name and describe

Answer 4

Crista Galli

pointy part of ethmoid bone

The crista galli (Latin: “crest of the rooster”) is a median ridge of bone that projects from the cribriform plate of the ethmoid bone. It is where the falx cerebri attaches anteriorly to the skull. The olfactory bulbs lie on either side of the crista galli on top of the cribriform plate.

Question 5

name

Answer 5

obturator foramen

Question 6

just look at the picture

Answer 6

Question 7

name the highlighted

Answer 7

dens of Axis vertebra(C₂)

dens is aka odontoid process

Question 8

name

Answer 8

trochlea of humerus

Question 9

name highlighted

Answer 9

os coxae

Question 10

how can you tell if this a right or left scapula

Answer 10

In order to determine if a scapula is right or left, orient it so the glenoid fossa (articulating surface) faces laterally (outward) and the spine is posterior (toward back) and superior (upper). The coracoid process should be superior and anterior.

Question 11

name and describe

Answer 11

glenoid fossa

Question 12

name

Answer 12

styloid of ulna

Question 13

nname

Answer 13

talus

Question 14

name

Answer 14

pubis

Question 15

name and describe

Answer 15

medial epicondyle of right humerus

Question 16

name

Answer 16

ischium

Question 17

A-E in order

Answer 17

scaphoid (some)

lunate (lovers)

triquetrium (try)

pisiform (positions)

trapezium (that)

trapezoid (they)

capitate (Can’t)

hamate (handle)

Question 18

whats the round part of the radius called

Answer 18

the head

Question 19

name

Answer 19

styloid process of radius

Question 20

Name the bone marking for C₁. What is C₁ called?

Answer 20

Bone Marking: Occipital facets

Name: Atlas

Question 21

name

Answer 21

ilium

Question 22

how can you tell if a humerus is right or left?

Answer 22

In order to distinguish right from left, first orient the bones so that the rounded head is superior (up) and pointing medially (toward the body’s midline). Then you will need to determine the anterior vs. posterior side. On the femur, look for the patellar surface, which is anterior. Also note how the articulating surfaces of the condyles extends far back on the posterior side (since the knee bends back but not forward). On the humerus, look for the deep olecranon fossa on the posterior side (where the olecranon process of the ulna fits in when the elbow is straightened). Both specimens above are from the right side.

Question 23

name and describe

Answer 23

vomer bone

Question 24

name and describe

Answer 24

acromion process of scapula

Question 25

name

Answer 25

patellar surface of the femur

Question 26

name and describe

Answer 26

lateral epicondyle of humerus

Question 27

name

Answer 27

olecranon fossa of humerus

Question 28

name a describe bone marking on the maxillary bone

Answer 28

palatine process on maxillary bone

Question 29

name

Answer 29

lateral malleolus of fibula

Question 30

name and describe

Answer 30

coracoid process of the scapula

Question 31

what is the only type of vertebrae that has a hole in its transverse process? What is the whole called?

Answer 31

Cervical vertebrae

transverse foramen

Question 32

name and describe

Answer 32

perpendicular plate of ethmoid

The perpendicular plate of the ethmoid bone (verticalplate) is a thin, flattened lamina, polygonal in form, which descends from the under surface of thecribriform plate, and assists in forming the septum of the nose; it is generally deflected a little to one or other side.

Question 33

name and describe

Answer 33

Occipital Condyles

a protrusion on the occipital bone of the skull that forms a joint with the first cervical vertebra, enabling the head to move relative to the neck.