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WorksheetsCollateral Circulation Quiz
Total questions: 20
Worksheet time: 10mins
Collateral circulation is best defined as
New vessel formation after birth
Blood flow through veins only
Enlargement of pre-existing anastomotic channels
Sudden increase in arterial pressure
Collateral circulation becomes effective when
Main artery is suddenly blocked
Main artery is slowly obstructed
Vein is occluded
Capillaries rupture
Which region shows well-developed collateral circulation
Kidney
Retina
Scapular region
Spleen
Circle of Willis is an example of
End artery supply
Portal circulation
Collateral circulation
Venous anastomosis
End arteries are arteries that
Have rich anastomosis
Do not anastomose significantly
Are accompanied by veins
Supply muscles only
Occlusion of end arteries results in
Congestion
Hypertrophy
Infarction
Inflammation
Central artery of retina is classified as
Functional end artery
True end artery
Collateral artery
Segmental artery
Which organ is supplied by true end arteries
Liver
Lung
Kidney
Skin
Sudden occlusion of renal segmental artery causes
Development of collateral circulation
No tissue damage
Infarction of supplied area
Venous congestion
A typical multipolar neuron has
One dendrite and one axon
Many dendrites and one axon
Many axons
No axon
Nissl substance is present in
Axon only
Axon hillock
Cell body and dendrites
Node of Ranvier
Axon hillock is characterized by
Presence of nucleus
Presence of Nissl substance
Absence of Nissl substance
Presence of myelin sheath
Node of Ranvier is present between
Two dendrites
Cell body and axon
Two myelin segments
Axon terminal and synapse
Function of dendrites is to
Conduct impulses away from cell body
Generate action potential
Receive impulses
Form myelin
Dorsal root of spinal nerve contains
Motor fibers
Sensory fibers
Mixed fibers
Autonomic fibers only
Ventral root of spinal nerve carries
Sensory fibers
Motor fibers
Mixed fibers
Post-ganglionic fibers
Dorsal root ganglion contains cell bodies of
Motor neurons
Autonomic neurons
Sensory neurons
Interneurons
Typical spinal nerve is formed by union of
Two dorsal roots
Two ventral roots
Dorsal and ventral roots
Sensory and autonomic nerves
Typical spinal nerve is
Purely sensory
Purely motor
Mixed nerve
Autonomic nerve
Rami communicantes connect spinal nerve with
Spinal cord
Skeletal muscle
Sympathetic chain
Posterior root
