A&p Exam 2
Exam 2- ready for final?
- 1.All of the following are functions of the skeletal system EXCEPT:
- A.
Blood formation
- B.
Protection
- C.
Movement
- D.
Electrolyte balance
- E.
None of the above
- 2.The sternum is a type of _____ bone while the atlas is a type of ____ bone
- A.
Flat, irregular
- B.
Short, irregular
- C.
Flat, short
- D.
Long, short
- E.
Short, flat
- 3.The ______ is a thin layer of reticular connective tissue licing the marrow cavity
- A.
Periosteum
- B.
Epiphysis
- C.
Endosteum
- D.
Diaphysis
- E.
Articular cartilage
- 4.__________ are responsible for bone formation and the secretion of _____________
- A.
Osteoclasts, calcitonin
- B.
Osteoblasts, osteocalcin
- C.
Osteoblasts, calcitrol
- D.
Osteoclasts, osteocalcin
- E.
Osteoblasts, osteon
- 5.Trapped cells called _____ reside in ______ which are connected by _____
- A.
Osteocytes, cannaliculi, collagenous fibers
- B.
Osteoblasts, lacunae, cannaliculi
- C.
Osteoclasts, central canals, concentric lamellae
- D.
Osteocytes, lacunae, cannaliculi
- E.
Osteoblasts, lacunae, osteons
- 6.Which of the following is NOT a component of bone matrix
- A.
Collagen
- B.
Calcium phosphate
- C.
Keratin
- D.
Calcium carbonate
- E.
Minerals (fluoride, sodium, potassium, and magnesium)
- 7.Both Haversian canals and Volkmann's canals contain:
- A.
Blood vessels
- B.
Cytoplasmic processes of osteocytes
- C.
Nerves
- D.
Osteoblasts
- E.
Both A and C
- 8.Intramembranous ossification produces the ______ bones of the skull from embryonic ______ that eventually gives rise to a sandwich-like structuve of _____ and _______ bone
- A.
Flat, ectoderm, compact, spongy
- B.
Irregular, mesenchyme, compact, spongy
- C.
Irregular, endoderm, spongy, short
- D.
Flat, mesenchyme, compact, spongy
- E.
Flat, mesenchyme, compact, long
- 9.An area of enlarging chondrocytes in the middle of the bone "model" during endochondral ossification is referred to as the:
- A.
Secondary ossification center
- B.
Epiphysis
- C.
Trabeculae
- D.
Metaphysis
- E.
Primary ossification center
- 10.Interstitial growth occurs when bones grow in ______ resulting from growth within the ______ while appositional growth occurs when bones grow in _____ by producing layers called ______.
- A.
Width, metaphysis, length, bone
- B.
Length, ephiphyseal plate, width, circumferential lamellae
- C.
Width, ephyphyseal plate, length, circumferential lamellae
- D.
Length, ephyphyseal plate, width, ephyphyseal lines
- E.
Length, central canal, width, circumferential lamellae
- 11.Which of the following cells is primarily responsible for bone/mineral deposition
- A.
Osteoblast
- B.
Osteoclast
- C.
Chondrocyte
- D.
Chondroblast
- E.
None of the above
- 12.All of following play a role in the process of mineral resorption EXCEPT:
- A.
Osteoclasts
- B.
Acid
- C.
Ruffled border
- D.
Red marrow
- E.
Both C and D
- 13.Hypocalcemia ______ is the result of ______ blood calcium and causes ______ of muscles leading to spasms or cramps
- A.
Increased, excitation
- B.
Decreased, inhibition
- C.
Increased, destruction
- D.
Decreased, excitation
- E.
Decreased, weakening
- 14.Calcitriol acts as a hormone that raises blood calcium concentration by all of the following mechaniusms EXCEPT
- A.
Inhibiting osteoclast activity
- B.
Increasing calcium resorption from the skeleton
- C.
Increasing calcium absorption from small intestine
- D.
Promotes kidney reabsorption of calcium ions
- E.
All of the above
- 15.Which hormone reduces osteoclast activity leading to less bone resorption?
- A.
Parathyroid hormone
- B.
Calcitriol
- C.
Calcitonin
- D.
Follicle stimulating hormone
- E.
Calcidiol
- 16.Which of the following DOES NOT result from parathyroid hormone secretion?
- A.
Raising osteoclast population
- B.
Reduced osteoclast activity
- C.
Kidneys reabsorb more calcium
- D.
Collagen synthesis by osteoblasts is inhibited
- E.
Blood calcium is subsequently increased
- 17.A ________ is an abnormal curvature of the vertebral column often seen in the common bone disease of ______ where severe loss of bone density is seen
- A.
Scoliosis, osteomyelitis
- B.
Kyphosis, osteosarcoma
- C.
Lordosis, osteoporosis
- D.
Kyphosis, osteoporosis
- E.
Lordosis, osteomyelitis
- 18.This structure holds or supports the temporal lobes of the brain
- A.
Anterior cranial fossa
- B.
Posterior cranial fossa
- C.
Lacrimal fossa
- D.
Mandibular fossa
- E.
Middle cranial fossa
- 19.This suture separates the parietal bones
- A.
Coronal
- B.
Lambdoidal
- C.
Squamous
- D.
Sagittal
- E.
None of the above
- 20.This bone forms the lambdoid suture with the parietal bone
- A.
Occipital bone
- B.
Frontal bone
- C.
Sphenoid bone
- D.
Ethmoid bone
- E.
Mandible
- 21.Which component is NOT part of the temporal bone?
- A.
Zygomatic process
- B.
Foramen magnum
- C.
External auditory meatus
- D.
Mastoid process
- E.
Syloid process
- 22.All of these bones contain sinuses EXCEPT:
- A.
Frontal
- B.
Sphenoid
- C.
Zygomatic
- D.
Maxilla
- E.
Ethmoid
- 23.This bone creates parts of both the orbital and oral cavities
- A.
Lacrimal bone
- B.
Zygomatic bone
- C.
Mandible
- D.
Palatine
- E.
Maxilla
- 24.A herniated disc might extend into this structure damaging the spinal cord
- A.
Vertebral foramen
- B.
Mastoid foramen
- C.
Optin foramen
- D.
Forman ovale
- E.
Mental foramen
- 25.The ___________ is a peg-shaped bone structure that acts as a pivot for the atlantoaxial joint and is held in place by the _______
- A.
Axis, diarthrosis
- B.
Dens, interosseous membrane
- C.
Mandibular condyle, palatine process
- D.
Styloid process, stylohyoid muscle
- E.
Dens, transverse ligament
Related Topics
Recent Quizzes
Back to top