Please Please help!!! 34: Which of the following is false about osteogenesis ? A. growth in the length of the bone conti

[answerhappygod]

Please Please help!!!
34: Which of the following is false about osteogenesis ?
A. growth in the length of the bone continues after birth
B. it involves vascularization of epiphysis C. except articular cartilage and epiphyseal plate the rest of the epiphysis is replaced by bone
D. growth in bone length continues after closure of epiphysis
E. growth in bone diameter is the result of subperiosteal intramembranous ossification
35: Which statement does not correctly describe osteoblasts? They:
A. are responsible for bone matrix formation
B. have a prominent nucleus and numerous mitochondria
C. are rich in rough endoplasmic reticulum D. secrete substances such as type I collagen
E. lack acid phosphatase activity during active bone formation
36: Which of the following is true about Ca++ regulation affecting bone formation ?
A. parathyroid hormone is released when blood Ca++ is high
B. calcitonin is released when blood Ca++ is low
C. Ca++ also diffuses from bone into the blood and back
D. parathyroid hormone inhibits bone resorption
E. calcitonin promotes bone resorption
40: Which set is not in a correct order ?
A. heart : arteries : arterioles : metarterioles : capillaries : venules : veins : venae cavae
B. impulse to smooth muscle sarcolemma : Ca++ entry : Ca++ -calmodulin complex formation : myosin kinase activation : myosin phosphorylation : muscle contraction
C. sinoatrial node: atrioventricular bundles : atrioventricular node : Purkinje fibers : atrial muscles : ventricular muscles
D. tunica intima : elastica interna : tunica media : elastic externa : tunica adventitia
E. epineurium : perineurium : endoneurium : myelin sheath axon
41: Which statement describes periosteum?
A. it consists of elastic cartilage
B. it is present on every bone surface
C. it consists of hydroxyapatite
D. it is a connective tissue layer covering most bone surfaces
E. does not have any osteogenic property
42: which is a true statement about blood vessel physiology ?
A. both blood flow and blood supply are intermittent
B. arteries maintain a vasomotor tone
C. lactic acid causes vasoconstriction
D. vasomotor tone is under the control of CNS
E. norepinephrine causes vasodilation
43: Which statement is false about myelin sheath ?
A. it increases speed of conduction
B. it is layered with in a network of neurokeratogenic protein
C. it has light or intra-period lines that represent apposition of outer surface of unit membrane of Schwann cells
D. it has dark or major lines that represent apposition of inner surface of unit membrane of Schwann cells
E. it forms a pattern called fields of Conheim
44: Which statement is false about roles of bone cells and associated hormones?
A. osteoclasts are active in bone resorption only if in contact with mineralized bone
B. acid and the enzyme hydrolase are the secretions from osteoclasts that remove Ca++ from the bone
C. during bone resorption the subosteoclastic compartment is formed in between the unmineralized bone and the osteoblasts
D. parathyroid hormone binds to receptors on osteoblasts eventually resulting in an increased blood Ca++ levels
E. organic matrix of bone is degraded by the enzyme collagenase from osteoblasts