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Locomotor

Skeletal muscle cells are NOT:
Mononucleate
Long
Cylindrical
What is the smallest contractile unit?
Fasciculus
Muscle fibre
Myofibril
Myofilament
Sarcomere
Which statement about the myosin filament is the LEAST accurate?
Has a helical tail and globular head
Contains an ATP binding site
Made of 2 heavy chains and 2 light chains
Reversibly binds actin
Which polypeptide does calcium bind in a muscle?
Myosin
Tropomyosin
Troponin C
Troponin I
Troponin T
During muscle contraction, when is ADP+Pi released?
Cross-bridge formation
Calcium binding Tn-C
Cross-bridge detachment
Power stroke
What energy source does type IIa and IIb muscle fibre rely on?
Creatinine phosphate
Anaerobic glucose metabolism
Cellular respiration
What disorder involves the axon?
Motor neuronopathy
Peripheral neuronopathy
Disorders of transmission
Myopathy
Myositis
Which one of these is autosomal recessive?
Spinal muscular atrophy
Motor neuron disease
Poliomyelitis
Duchenne muscular dystrophy
Dermatomyositis
For which one of these disorders is obesity a risk factor?
DDH (developmental dysplasia of hip)
Perthes disease
SCFE (slipped capital femoral epithesis)
Which type of axon transmits cooling and prickling pain signals?
A-alpha
A-beta
A-delta
C
What type of receptors give rise to A-beta axons?
Nociceptors
Free nerve endings
Mechanoreceptors
Proprioreceptors
What is the neurotransmitter at Renshaw cells?
Glycine
ACh
NA
Strychnine
GABA
What is a isometric muscle contraction?
Increases both length and tension
Increases length, but maintains the same tension
Maintains length, increases tension
Decreases length, maintains tension
Maintains length, decreases tension
Inhibitory synapses are closer to cell bodies.
TRUE
FALSE
Which tract is mostly nociceptive?
Corticospinal
Corticobulbar
Lateral spinothalamic
Anterior spinothalamic
What would be the composition of CSF of a patient affected by meningitis?
High protein, high glucose
High protein, low glucose
Low protein, high glucose
Low protein, low glucose
Unchanged
What would be an example of primary head injury?
Brain swelling
Increased intracranial pressure
Contusion
Infarction
What cancers are a common source of cerebral metastases?
Lung
Skin
Bone marrow
Breast
GI tract
Prostate
Which one of these involves multiple nerves in disparate areas?
Mononeuropathy
Mononeuropathy multiplex
Polyneuropathy
Which one of these is the least severe?
Neuropraxia
Axonotmesis
Neurotmesis
What disease is characterised by inverted champagne-bottle legs?
Guillan-Barre syndrome
Charcot Marie Tooth disease
Duchenne muscular dystrophy
Osteogenesis imperfecta
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