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Quiz 27
Mdcat-past-papers - ETEA Quiz
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Board: ETEA |
521. How many actin filaments surround the myosin at each end?
2
4
6
8
522. The ........ surrounds the muscle fiber of the skeletal muscle.
Cytoplasm
Myofibrils
Lacuna-
Sarcoplasm
523. What happens to calcium when skeletal muscles recover from contraction?
Released from the sarcoplasmic reticulum
Released from the myosin head
Pumped into the sarcoplasmic reticulum
Exchange for sodium ions
524. Which of the following does not relate to the smooth muscles?
Controlled by the autonomic nervous system
Have spindle shaped cells
Line the wall of heart
Lack striations
525. Which one of the following is not related to arthritis?
Inflammation of joint
An autoimmune disease
Inflammation of nerve
the leading cause of disability in patients over age 65
526. Muscle fatigue results due to deficiency of ------ and excess accumulation of ------
Adenosine triphosphate, Lactic acid
Adenosine triphosphate, ionic imbalance
Glucose, lactic acid
Glucose, ionic imbalance
527. The type of neuron that carries nerve impulse from tissue and organ to the spinal cord and brain is:
Sensory neuron
Motor neuron
Intermediate neuron
Associative
528. The resting membrane potential of neuron is measured about:
-30millivolts
50 millivolts
-70 millivolts
100 millivolts
529. The hind brain is comprised of all of the following except:
Pons
Cerebellum
Cerebrum
Medulla oblongata
530. The neuron is said to be polarized when the:
Inside of the plasma membrane has a negative energy compared to the outside
Inside of the plasma membrane has a positive energy compared to the outside
Inside the plasma membrane has same energy compared to the outside
531. What brings membrane potential to threshold?
Influx of Na+ ions across post synaptic membrane
Positive charge moves inside the neuron
Outflow of Ca ion across the post synaptic membrane
Schwann cell
532. A reflex action does not involve the
Brain
Motor neuron
Sensory neuron
Spinal cord
533. Diffusion of ----- across the post synaptic membrane causes it to depolarize:
Calcium ions
Chloride ions
Potassium ions
Sodium ions
534. The neurotransmitter ------- is hydrolyzed by mono-amine oxidase:
Acetylcholine
Adrenaline
Glutamate
Serotonin
535. The total number of cranial nerves in a human body are:
12 pairs
24 pairs
31 pairs
62 pairs
536. Which part of the brain plays a key role in long term memory?
Thalamus
Hippocampus
Hypothalamus
Amygdala
537. The cerebellum is primarily concerned with:
Thinking and reasoning
Temperature regulation
Balancing during active movement
initiation of muscular contraction
538. A shallow groove in cerebrum is called -------- and deep groove is called:
Sulcus, Fissure
Fissure, Sulcus
Gyrus, Fissure
fissure, Gyrus
539. The following function/activity is NOT controlled by the autonomic nervous system.
Cardiac muscle contraction
Salivation
Smooth muscle contraction
Thoughts and emotions
540. A motor neuron:
Carries impulse from effectors to CNS
Carries impulse from receptors to CNS
Carries impulse from CNS to muscles
Connects sensory nerves to ganglions
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