quiz #3 - skeletal tissue Flashcards
Which region of a long bone articulates with other bones?
Epiphysis
The shaft of a long bone is the…
diaphysis
The _____ is composed of hyaline cartilage and allows the diaphysis to grow in length
Epiphyseal plate
What area of long bone is composed of dense irregular connective tissue and osteogenic cells?
Periosteum
The cells active in fracture repair during the production of the hard (spongy bone) callus are called
osteoblasts
Why would running and jumping have a larger effect on bone health than walking?
Osteoblasts are more active and osteoclast maintain normal activity when there is mechanical stress placed on bones
In endochondral ossification, what is the original source of osteoblasts?
Osteoprogenitor cells
Which type of fracture is considered a partial fracture and is only seen in children?
Greenstick
Mary, an avid runner, was complaining that her lower leg hurt. After going to the doctor, they did not see anything on x-rays of her tibia or fibula. The doctor ordered a bone scan and saw tiny fissures throughout her tibia without any other tissue damage. What is Mary’s likely diagnosis?
Stress fracture
Bone mass reduction is promoted by which hormone?
Parathyroid hormone
What hormones is/are released from the control center when the control center receives cAMP input; also important in increasing blood calcium serum levels?
Parathyroid
PTH will increase _____ activity while Calcitonin will decrease _____ activity
osteoclast; osteoclast
Which of the following is the correct sequence of steps in the repair of a bone fracture?
Fracture hematoma, fibrocartilaginous callus formation, bony callus formation, bone remodeling
Osteoporosis is most common in elderly women because of the lack of _____ which would inhibit _____
estrogen; osteoclast activity
If collagen is removed from bone, what happens to the bone?
The bone becomes stiff and brittle
