541. Membrane surrounding a bone is called?
(A. Periosteum)
B. Endosteum
C. Pericardium
D. Perichondrium


542. Major inorganic components of vertebrate bone are:
A. Calcium carbonate
B. Calcium bicarbonate
(C. Calcium phosphate)
D. Potassium hydroxide


543. Haversian canals found in bones contain:
A. Artery and vein
B. Osteoblasts in areolar tissue
(C. Nerve and Lymph vessel)
D. All of these


544. In vertebrates, a reflex action is an essential display induced by:
A. Sensory nerve
(B. Motor nerve)
C. Autonomic response
D. Sympathetic nerve


545. Which of these is not a reflex reaction?
A. Salivation
(B. Secretion of sweat)
C. Flexion due to needle prick
D. Eye blinking caused by bright light


546. Which one illustrates a reflex arc?
A. Brain > Spinal cord > Muscles
(B. Muscle > receptor > Brain)
C. Muscle > spinal cord > Brain
D. Muscle * > Receptor > Spinal Cord


547. Reflex action is controlled by:
A. Autonomic nervous system
B. Peripheral nervous system
(C. Central nervous system)
D. None of these


548. Demonstration of a conditioned reflex was first made by:
(A. Pavlov)
B. William Harvey
C. Robert Brown
D. Karl Von Frisch


549. In vertebrates, a simple reflex action is:
(A. Monosynaptic)
B. Polysynaptic
C. Bisynaptic
D. Trisynaptic


550. Which of the following is controlled by the autonomic nervous system?
A. Papillary reflex
B. Swallowing food
(C. Knee-Jerk response)
D. Peristalsis of the intestine


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