A&P Skeletal System

Ribs that have no connection to the sternum are called ________.

floating ribs

Which structural feature of the scapula articulates with the Humerus?

glenoid cavity

The connective tissue covering the outer surface of a bone is (the)

periosteum

An abnormal lateral curvature of the spine is termed

scoliosis

The hyoid bone

serves as a base for muscles associated with the larynx, tongue, and pharynx.

Tarsal bones are classified as ________ bones.

short

Which joint permits the greatest range of motion of any joint in the body?

shoulder

The vertebral arches contribute structurally to surround and protect the

spinal cord

The ________ of the radius assists in the stabilization of the wrist joint by preventing lateral movement of the bones of the wrist.

styloid process

Skull bones are joined by tight connections called

sutures

A fibrous joint in which the bones are held together by a ligamentous connection is a

syndemosis

Spongy bone is made up of a network of bony rods or plates called

trabeculae

Ribs that are connected to the sternum by separate cartilaginous extensions are called ________ ribs.

true

The most inferior portion of the sternum is called the

xiphoid process and is the most likely to be damaged during CPR

Skeletal bones store lipids as energy reserves in areas of

yellow bone marrow

Match the related terms 1. osteocytes 2. diaphysis 3. C1 4. C2 5. Synarthrosis 6. Raising the arm laterally

1. Mature bone cells 2. bone shaft 3. atlas 4. axis 5. immovable joint 6. abduction

Match the anatomical term with its corresponding region from the list below. 1. Humerus 2. radius 3. tibia 4. femur 5. ischium

1. brachium 2. antebrachium 3. crurum (leg) 4. thigh 5. pelvis

Ribs

12 pairs total 1-7 True ribs that attach to sternum 8-12 are false ribs with 11-12 being floating ribs

Number of bones in the skull

22 (8 cranial, 14 facial)

Bones in the Cranium front to back Mnemonic

Ethan's: Ethmoid Fried: Frontal Spanish: Sphenoid Pasta: Parietal Tempted: Temporal Octavia: Occipital

________ is a movement that occurs in the anterior-posterior plane and increases the angle between the articulating bones.

Extension

Which of the following is an example of the skeletal system's primary function of providing structural support?

Individual bones provide a framework for the attachment of soft tissues and organs.

Facial bones

Mandible (1), Vomer (1), Nasal bones, Inferior Nasal Concha, Lacrimal bones, Palatine bones, Zygomatic bones, Maxilla

Facial Bones Mnemonic

My: Mandible Mouth's: Maxilla Palate: Palatine Never: Nasal Bones Liked: Lacrimal Bones Zucchini: Zygomatic Bones In: Inferior Nasal Concha Vinegar: Vomer

Which of the following is why osteopenia occurs starting between the ages of 30-40 ?

Osteoblastic activity slows and osteoclastic activity increases

Appendicular skeleton

Pectoral and pelvic girdles, bones of arms, legs pelvis and shoulders. (126 bones)

Axial Skeleton

Portion of the skeletal system that consists of the skull, rib cage, sternum and vertebral column (80 bones)

Rickets is a condition marked by a softening and bending of bones that occurs in growing children, as a result of ________ deficiency.

Vitamin D3

Which of the following is part of the axial skeleton?

a. Coxal bones b. ribs. This answer is correct. c. clavicle d. carpal bones e. patella

Red bone marrow functions in the formation of

blood cells

The process of depositing calcium salts into a tissue other than bone is called ________.

calcification

The bones of the wrist form the ________.

carpus

The atlas is classified as a ________ vertebra.

cervical

The depression on the distal end of the anterior humerus is the

coronoid fossa

True ribs are directly connected to the sternum by ________.

costal cartilages

The shaft of a long bone is called the ________.

diaphysis

The function of synovial fluid is

a. to nourish chondrocytes. b. to absorb shock. c. to provide lubrication d. a, b, and c are correct. (Correct Answer)

A movement away from the longitudinal axis of the body in the frontal plane is

abduction

One role of the fontanels is to

allow for the change in shape of the skull during childbirth.

The presence of ________ strongly indicates that the long bone is still growing.

an epiphyseal plate

Which of the following is an example of a synchondrosis?

articulation between the diaphysis and epiphysis in a growing long bone

Which joint type can perform rotation movements?

ball and socket

The patella

glides over the smooth anterior surface, between the lateral and medial condyles.

The trochlea is a structural feature of which bone?

humerus

Associative skull bones

hyoid (tongue bone) Malleus (hammer) Incus (Anvil) Stapes (stirrups)

A twisting motion of the foot that turns the sole inward is termed

inversion

The structure that surrounds a diarthrotic joint is called a(n)

joint capsule

Narrow sheets of calcified matrix are referred to as

lamellae

The bones of the limbs are classified as

long bones

Osteocytes

maintain normal bone structure by recycling the calcium salts in the bony matrix around themselves.

The maxillary bones articulate with all other facial bones except the ________.

mandible

Which is the anatomical term for a passageway through a bone?

meatus

Compared with the male pelvis, the female pelvis has a

narrower pubic angle

In the skeletal system, compact bone is usually located

only in a narrow ring around the diaphysis of long bones.

The special movement of the thumb that allows it to grasp an object and hold onto it is called

opposition

Bone-forming cells are called ________.

osteoblasts