29 Questions
Which bone cell has a distinct ruffled border that has direct contact to the bone, causing it to break down?
Osteoclast
What type of bone cells monitor the bone matrix?
Osteocytes
When a fractured bone undergoes the self-repair process, the fibrocartilaginous callus is converted into what?
Bony Callus
Which choice about the gross anatomy of the bone is incorrect?
Spongy bone only contains yellow bone marrow
Which bone fracture breaks along the vertical axis of the bone?
Linear
Which hormone is used for calcium deposition?
Calcitonin
In bone health, what is a group of diseases in which bone resorption outpaces bone deposition?
Osteoporosis
What are concentric layers of the bone that form in an osteon?
Lamellae
During endochondral ossification, which cell breaks down the bone to form the medullary cavity?
Osteoclasts
What does bone develop from during endochondral ossification?
Hyaline cartilage
What hormone heavily influences growth during infancy and childhood?
Growth hormone
When does calcification of the epiphysis begin during long bone formation?
Epiphysis
What is the main characteristic of extensibility associated with?
Elastic (titin) filaments
What would be the likely symptoms of curare poisoning based on the provided information?
Curare will only affect muscles with ACh receptors, paralyzing them
During muscle contraction, what occurs when thin filaments move over thick filaments?
Sliding past each other
What happens during muscle contraction?
Thick filaments shorten so that thin filaments slide past
Which process is associated with sarcomere extensibility?
Titin stretching and recoiling
What is the effect of curare binding to ACh receptor sites?
Paralysis of muscles with ACh receptors
Which of the following best explains why long bones are the thickest midway along the diaphysis?
Wolff's Law
What is untrue about bone deposition?
Osteoclasts break down bone using H+ ions and lysosomal enzymes
In which part of an osteon can you find canaliculi and what is their function?
Canaliculi - stores osteocytes/maintains the bone matrix
Which of the following occurs in the spongy bone of the epiphysis?
hematopoiesis
Which of the following is found in the Haversian canal?
vessels and nerves
Which order correctly represents the sequential steps in bone repair?
3,4,1,2
What would be the effect of adding more myoglobin to a muscle fiber?
Fast oxidative and slow oxidative fibers
Which muscle property is most responsible for the autorhythmicity of the heart?
Electrical excitability
During a muscle contraction, what moves along what towards the M line?
Myosin; actin
Which of the following proteins are involved in regulating muscle contraction?
Tropomyosin and troponin
What effect would adding more myoglobin to a muscle fiber have on the appearance of different bands?
The I bands to appear wider
Test your knowledge on bone anatomy, osteoporosis, and bone growth with this quiz. Questions cover topics like osteons, bone resorption, and epiphyseal bone growth.
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