Question 1

How many bones make up the adult skeleton?&#10;A) 210&#10;B) 202&#10;C) 206&#10;D) 204

Accepted Answer

The adult skeleton is composed of 206 bones.

Question 2

All of the following are functions of the skeletal system EXCEPT ________.&#10;A) maintaining body temperature&#10;B) manufacturing blood cells&#10;C) supporting the body's soft tissues&#10;D) serving as levers that allow the muscular system to produce movement

Accepted Answer

The skeletal system does not play a direct role in maintaining body temperature. This is primarily the function of the nervous and endocrine systems.

Question 3

Which of the following cells dissolve bone matrix to tear bone down so that is can be replaced with new stronger bone?&#10;A) marrow&#10;B) osteoblasts&#10;C) osteocytes&#10;D) osteoclasts

Accepted Answer

Osteoclasts are cells that dissolve bone matrix in a process called bone resorption. This allows for the breakdown of old or damaged bone tissue so that it can be replaced with new, stronger bone. Marrow produces blood cells, while osteoblasts and osteocytes are involved in the formation and maintenance of bone tissue, respectively.

Question 4

What three bones form the coxal bone?&#10;A) ilium, ischium, coccyx&#10;B) ilium, ischium, pubis&#10;C) ilium, ischium, sacrum&#10;D) none of the above

Accepted Answer

The ilium, ischium, and pubis are the three bones that fuse together to form the coxal bone (also known as the hip bone). The coccyx is a small bone at the bottom of the spine and the sacrum is a triangular bone just below the lumbar vertebrae, neither of which contribute to the formation of the coxal bone.

Question 5

The cells responsible for bone growth and repair are called ________.&#10;A) periosteum&#10;B) bone marrow&#10;C) osteocytes&#10;D) osteoblasts

Accepted Answer

Osteoblasts are cells responsible for bone growth and repair. They are responsible for synthesizing and mineralizing the bone matrix. The periosteum is a dense connective tissue covering the outer surface of bone. Bone marrow is responsible for hematopoiesis (blood cell formation) and is located inside bones. Osteocytes are mature bone cells that are responsible for maintaining the bone matrix.

Question 6

Which structure allows the diaphysis of the bone to grow longer until early childhood?&#10;A) lacunae&#10;B) epiphysis&#10;C) osteon&#10;D) epiphyseal plate

Accepted Answer

The epiphyseal plate, also known as the growth plate, is a cartilaginous structure located between the diaphysis and epiphysis of a long bone in children and adolescents. This structure allows for the lengthening of bones until early childhood, after which it typically ossifies and turns into the epiphyseal line. The lacunae are small cavities within the bone matrix that house osteocytes. The epiphysis is the rounded end of a long bone, while the osteon is the structural unit of compact bone tissue.

Question 7

Unlike compact bone, spongy bone forms a meshwork of bony struts called ________.&#10;A) canaliculi&#10;B) osteons&#10;C) lacunae&#10;D) trabeculae

Accepted Answer

Spongy bone forms a meshwork of bony struts called trabeculae. Canaliculi are tiny canals that connect lacunae, which are small spaces in bone matrix where osteocytes reside. Osteons are the basic functional units of compact bone.

Question 8

Red bone marrow contains a high amount of ________.&#10;A) elastic tissue&#10;B) blood forming cells&#10;C) fat&#10;D) cartilage

Accepted Answer

Red bone marrow is responsible for producing blood cells, including red blood cells, white blood cells, and platelets. It is found mostly in the flat bones like the hip bone, breast bone, skull, and in the ends of long bones like the femur and humerus.

Question 9

All of the following bones are part of the upper limbs EXCEPT ________.&#10;A) humerus&#10;B) ulna&#10;C) metatarsals&#10;D) carpals

Accepted Answer

Metatarsals are part of the lower limbs, not the upper limbs. The humerus, ulna, and carpals all make up the upper limbs.

Question 10

What are the small spaces in bone matrix, where osteocytes reside?&#10;A) lamellae&#10;B) lacunae&#10;C) osteons&#10;D) central canals

Accepted Answer

Lacunae are small spaces in the bone matrix that contain osteocytes, which are bone cells.

Question 11

The inner layer of bone tissue consists of ________.&#10;A) marrow&#10;B) osteoblasts&#10;C) compact bone&#10;D) chondrocytes

Accepted Answer

The answer of The inner layer of bone tissue consists...

Question 12

The Haversion system refers to ________.&#10;A) lacunae&#10;B) lamellae&#10;C) central canals&#10;D) osteons

Accepted Answer

The answer of The Haversion system refers to ________.&#10;A) lacunae&#10;B)...

Question 13

If a bone fractured in the shaft, what part of the bone would be broken?&#10;A) epiphysis&#10;B) metaphysis&#10;C) diaphysis&#10;D) articular cartilage

Accepted Answer

The answer of If a bone fractured in the shaft,...

Question 14

Which of the following is a bone marking that indicates a rounded passageway for blood vessels or nerves?&#10;A) tubercle&#10;B) trochanter&#10;C) foramen&#10;D) process

Accepted Answer

The answer of Which of the following is a bone...

Question 15

The term diplo&#235; refers to ________.&#10;A) the two types of marrow found in bone&#10;B) the growth plate&#10;C) the layer of connective tissue the covers the bone&#10;D) the spongy bone between the compact bone of flat bones

Accepted Answer

The answer of The term diplo&#235; refers to ________.&#10;A) the...

Question 16

The central canal is the site of ________.&#10;A) cartilage&#10;B) blood vessels and nerves&#10;C) yellow and red marrow&#10;D) osteoclasts and osteoblasts

Accepted Answer

The answer of The central canal is the site of...

Question 17

Yellow bone marrow contains a high amount ________.&#10;A) blood-forming cells&#10;B) fat&#10;C) elastic tissue&#10;D) cartilage

Accepted Answer

The answer of Yellow bone marrow contains a high amount...

Question 18

All of the following are part of the appendicular skeleton EXCEPT ________.&#10;A) clavicle&#10;B) hyoid bone&#10;C) scapula&#10;D) coxal bones

Accepted Answer

The answer of All of the following are part of...

Question 19

All of the following are parts of the axial skeleton EXCEPT ________.&#10;A) hyoid bone&#10;B) vertebrae&#10;C) scapula&#10;D) sternum

Accepted Answer

The answer of All of the following are parts of...

Question 20

All of the following are examples of short bones EXCEPT ________.&#10;A) tarsals&#10;B) vertebral bones&#10;C) carpals&#10;D) none of the above

Accepted Answer

The answer of All of the following are examples of...

Question 21

What type of bone marking is a shallow depression?&#10;A) fossa&#10;B) foramen&#10;C) fissure&#10;D) sulcus

Accepted Answer

The answer of What type of bone marking is a...

Question 22

What type of bone marking is a small, flat articular surface?&#10;A) canal&#10;B) ramus&#10;C) facet&#10;D) fossa

Accepted Answer

The answer of What type of bone marking is a...

Question 23

What type of bone marking is a large, rough projection?&#10;A) line&#10;B) trochanter&#10;C) head&#10;D) tubercle

Accepted Answer

The answer of What type of bone marking is a...

Question 24

What type of bone marking refers to a pointed process?&#10;A) process&#10;B) spine&#10;C) tubercle&#10;D) trochanter

Accepted Answer

The answer of What type of bone marking refers to...

Deck 13: Organization of the Skeletal System