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