Chapter 7 Flashcards Preview

Biology 201 Ch. 1 > Chapter 7 > Flashcards

Flashcards in Chapter 7 Deck (56)
Loading flashcards...
0
Q

TMJ

A

Acts like a sliding hinge connecting your jawbone to your skull

1
Q

Sacrum angle

A

Has 30 degree angle

2
Q

Factors that affect mobility

A
Curvature of spine
Thickness of discs
Shape, direction of facets
Spinous process
Ribs
3
Q

Frontal bone

A

Forms the anterior cranium

4
Q

Parietal bone

A

Two large rectangular bones that form most of the superior and lateral aspects of the skull

5
Q

Occipital bone

A

Forms most of the skulls posterior wall and base

6
Q

Temporal bones

A

Viewed on the lateral skull surface

7
Q

Sphenoid bone

A

Bat shaped bone. Spans the width of the middle cranial fossa

8
Q

Ethmoid bone

A

Forms most of the bony area between the nasal cavity and the orbits

9
Q

Mandible

A

U shaped. Or lower jawbone

10
Q

Maxilla bone

A

Form the upper jaw and central portion of the facial skeleton

11
Q

Zygomatic bones

A

Cheek bones

12
Q

Coronoid process

A

Insertion point for the large temporalis muscle that elevates the lower jaw during chewing

13
Q

Lacrimal bones

A

Medial walls of each orbit (tears)

14
Q

Differences between male and female pelvis

A

Female
Tilted forward, adapted for child bearing, pelvis is broad
Bones lighter and smoother
Acetabela is smaller and farther apart
Pubic angle is 80 to 90 degree more rounded

Male
Tilted less far foward. Adapted for support of males heavier build. Pelvis is narrow and deep
Bones are thicker and heavier
Acetabela closer together
Angle is smaller 50 to 60 degrees
15
Q

Ilium

A

Large flaring bone that forms the superior region of the coxal bone

16
Q

Ischium

A

Forms the posteroinferior part of the hip bone. L shaped

17
Q

Pubis

A

Forms the anterior portion of the hip bone

18
Q

Acetabulum

A

Point of the fusion of ilium, ischium, and pubis is hemispherical socket called the acetabulum. Receives head of femur

19
Q

Shoulder joint

A

Only the clavicle attaches to the axial skeleton. The scapula can move quite freely across the thorax, allowing the arm to move with it

The socket of the shoulder joint is shallow and poorly reinforced, so it doesn’t restrict the movement of the humerus. This is good for flexibility, it is bad for stability

20
Q

Clavicle

A

S shaped

21
Q

Glenoid

A

The thick lateral , or axillary border abuts the armpit and ends superiority in a small, shallow fossa

22
Q

Acromion

A

The spine ends laterally in an enlarged roughened triangle projection called the acromion

23
Q

Acromioclavicular joint

A

The acromion articulates with the acromial end of the clavicle forming the acromioclavicular joint

24
Q

Coracoid process

A

Projecting anteriorly from the superior scapular border is the coracoid process

25
Q

Humerus

A

Long bone

26
Q

Clavicles mobility

A

The clavicles S shape helps with mobility

27
Q

Condyle

A

Medial and lateral epicondyles. The the bottom of the humerus. Muscle attachment sites

28
Q

Olecrannon fossa

A

On the posterior surface. These two depressions allow the corresponding processes of the ulna to move freely when the elbow is flexed and extended

29
Q

Trochlea and capitulum

A

These consoles articulate with the ulna and the radius respectively. Trochlea is an hourglass shape and capitulum is a lateral ball shape

30
Q

Radial tuberosity

A

Anchors the biceps muscle of the arm.

31
Q

Radial styloid process

A

An anchoring site for ligaments that run to the wrist

32
Q

Hand

A

Carpals (wrist), metacarpals (Palm) and phalanges (fingers)

33
Q

Carpus (wrist)

A

The true wrist or carpus is the proximal part of the structure we call the hand. The carpus consists of eight marble size short bones

34
Q

Scaphoid of the wrist

A

Boat shaped

35
Q

Lunate of the wrist

A

Moon like

36
Q

Triquetrum of the wrist

A

Triangular

37
Q

Pisiform of the wrist

A

Pea shaped. All but the pisiform participate in forming the wrist joint

38
Q

Carpals of the distal row, trapezium

A

Little table

39
Q

Carpals of the distal row, trapezoid

A

Four sided

40
Q

Carpals of the distal row, capitate

A

Head shaped (keystone)

41
Q

Carpals of the distal row, hamate

A

Hooked

42
Q

Femur

A

The largest, longest, and strongest bone in the body

43
Q

Greater trochanter of the femur

A

At the junction of the shaft and neck

44
Q

Lesser trochanter

A

Posteromedial

45
Q

Lateral and medial condyles of femur

A

The femur broadens and ends in the wheel like condyles which articulate with the tibia

46
Q

Tibia

A

Shin bone. Receives the weight of the body from the femur and transmits it the foot

47
Q

Tibial tuberosity

A

Just inferior to the condyles, the tibias anterior surface displays the rough tibial tuberosity to which the patellar ligament attaches

48
Q

Medial malleolus

A

Forms the medial bulge of the ankle

49
Q

Fibula

A

Stick like bone. Proximal end is the head. It’s distal end is the lateral malleolus which forms the conspicuous lateral ankle bulge

50
Q

Talus

A

Body weight is carried primarily by the two largest, most posterior tarsals

51
Q

Ankle

A

Tarsals

52
Q

Calcaneous

A

Heel bone. Forms the heel of the foot and carries the talus on its superior surface

53
Q

Medial navicular and lateral cuboid

A

Remaining tarsals of the foot

54
Q

Anterior medial, intermediate, and lateral cuneiform bones

A

Wedge shaped

55
Q

Foot

A

Metatarsals, toes, same as hands