Nissl bodies are mainly composed of
Proteins and lipids
DNA and RNA
Free ribosomes and RER
Nucleic acids and SER
C.
Free ribosomes and RER
Nissl granules are present in the cyton and even extend into the dendrite but absent in axon and rest of the neuron.
Nissl granules are in fact composed of free ribosomes and RER. They are responsible for protein synthesis.
Schneiderian and tympanic membrane respectively belongs to
Ear and nose
Ear and eye
Ear and ear
Nose and ear
The transparent lens in the human eye is held in its place by
ligaments attached to the ciliary body
ligaments attached to the iris
smooth muscles attached to the ciliary body
smooth muscles attached to the iris
Match the following columns.
| Column I | Column II | ||
| A | Sacral nerves | 1. | 1 Pair |
| B | Thoraic nerves | 2. | 8 Pair |
| C | Cocygeal nerves | 3. | 7 Pairs |
| D | Cervical nerves | 4. | 12 Pairs |
| 5. | 5 Pairs | ||
| A | B | C | D |
| 4 | 1 | 3 | 2 |
| A | B | C | D |
| 5 | 3 | 1 | 2 |
| A | B | C | D |
| 5 | 4 | 1 | 1 |
| A | B | C | D |
| 2 | 5 | 3 | 1 |
Which of the following structures or regions is incorrectly paired with its functions?
Medulla oblongata : Controls respiration and cardiovascular reflexes
Limbic system: consists of fibre tracts that interconnect different regions of brain; controls movement.
Corpus callosum: band of fibres connecting system: left and right cerebral hemispheres.
Hypothalamus: production of releasing hormones and regulation of temperature,the hunger and thirst.
During the transmission of nerve impulse through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric charge?
First negative then positive and again back to negative
First positive than negative and continue to be negative
First negative then positive and continue to be positive
First positive then negative and again back to positive
Which of the following statement is correct in relation to the endocrine system?
Adenohypophysis is under direct neural regulation fo the hypothalamus
Organs in the body like a gastro-intestinal tract, heart, kidney and liver do not produce any hormone.
Non-nutrient chemicals produced by the body in trace amount that act as inter-cellular messanger are known as hormones.
Releasing and inhibitory hormones are produced by the pituitary gland
In the central nervous system, myelinated fibres form the ….., while the non-myelinated fibre cells form the ……
Grey matter, white matter
White matter, grey matter
Ependymal cells, neurosecretory cells
Neurosecretory cell, ependymal cells
