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.

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

Nissl bodies are mainly composed of

• Proteins and lipids

• DNA and RNA

• Free ribosomes and RER

• Nucleic acids and SER

Match the following columns.

• 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

Pick the hormone which is not secreted by human placenta.

• hCG

• hPL

• Prolactin

• Oestrogen

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

Lens of eyes is derived from

• Ectoderm

• Mesoderm

• Endoderm

• Both (b) and (c)

Schneiderian and tympanic membrane respectively belongs to

• Ear and nose

• Ear and eye

• Ear and ear

• Nose and ear

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