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Quiz 13
Mdcat-past-papers - ETEA - Biology Quiz
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Board: ETEA | Subject: Biology |
241. The precursor cells are chondrocytes
Calcified
Elastic
Fibrous
Hyaline
242. The cells contained in the lacunae of the bone are called:
Chondrocytes
Osteocytes
Osteoblast
Osteoclast
243. Those joints in which the articulating bones are separated by a fluid-containing cavity are called:
Fibrous joints
Cartilaginous joints
Synovial joints
Immovable
244. The joints present in the elbow and knee are the examples of which type of joint?
Immovable joint
Saddle joint
Hinge joint
Ball and socket joint
245. The hollow elongated tube formed when muscle fiber penetrates deep into the cell is known as:
A tubule
T tubule
M tubule
Z tubule
246. How many actin filaments surround the myosin at each end?
2
4
6
8
247. The ........ surrounds the muscle fiber of the skeletal muscle.
Cytoplasm
Myofibrils
Lacuna-
Sarcoplasm
248. 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
249. 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
250. 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
251. 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
252. 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
253. The resting membrane potential of neuron is measured about:
-30millivolts
50 millivolts
-70 millivolts
100 millivolts
254. The hind brain is comprised of all of the following except:
Pons
Cerebellum
Cerebrum
Medulla oblongata
255. 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
256. 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
257. A reflex action does not involve the
Brain
Motor neuron
Sensory neuron
Spinal cord
258. Diffusion of ----- across the post synaptic membrane causes it to depolarize:
Calcium ions
Chloride ions
Potassium ions
Sodium ions
259. The neurotransmitter ------- is hydrolyzed by mono-amine oxidase:
Acetylcholine
Adrenaline
Glutamate
Serotonin
260. The total number of cranial nerves in a human body are:
12 pairs
24 pairs
31 pairs
62 pairs
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