Which one of the following statements is not correct?
1.
Retinal is the light-absorbing portion of visual photo pigments
2.
In retina, the rods have the photopigments rhodopsin while cones have three different photopigments.
3.
Retinal is a derivative of Vitamin C
4.
Rhodopsin is the purplish protein present in rods only.
Identify the hormone with its correct matching of source and function:
| 1. | Oxytocin- posterior pituitary, growth and maintenance of mammary glands. |
| 2. | Melatonin- pineal gland, regulates the normal rhythm of sleep-wake cycle. |
| 3. | Progesterone- corpus-luteum, stimulation of growth and activities of female secondary sex organs. |
| 4. | Atrial natriuretic factor- ventricular wall increases blood pressure. |
Fight - or - flight reaction cause activation of:
| 1. | the parathyroid glands, leading to increased metabolic rate. |
| 2. | the kidney, leading to suppression of the rennin angiotensin-aldosterone pathway. |
| 3. | the adrenal medulla, leading to increased secretion of epinephrine and norepinephrine |
| 4. | the pancreas leading to a reduction in blood sugar levels. |
The shared terminal duct of the reproductive and urinary system in the human male is:
1. Urethra
2. Ureter
3. Vas deferens
4. Vasa efferentia
The main function of mammalian corpus luteum is to produce:
1. Oestrogen only
2. progesterone
3. human chorionic gonadotropin
4. relaxin only
Select the correct option describing gonadotropin activity in a normal pregnant female:
| 1. | High level of FSH and LH stimulates the thickening of endometrium. |
| 2. | High level of FSH and LH facilitate implantation of the embryo |
| 3. | High level of hCG stimulates the synthesis if estrogen and progesterone |
| 4. | High level of hCG stimulates the thickening of the endometrium. |
Tubectomy is a method of sterilization in which:
1. small part of the fallopian tube is removed or tied up.
2. ovaries are removed surgically
3. small part of vas deferens is removed or tied up
4. uterus is removed surgically
Which of the following is a hormone-releasing intra Uterine Device (IUD)?
1. Multiload 375
2. LNG - 20
3. Cervical cap
4. Vault
Assisted reproductive technology, IVF involves the transfer of:
1. Ovum into the fallopian tube.
2. Zygote into the fallopian tube.
3. Zygote into the uterus
4. Embryo with 16 blastomeres into the fallopian tube.
A man whose father was colour blind marries a woman who had a colour blind mother and a normal father. What percentage of male children of this couple will be colour blind?
1. 25%
2. 0%
3. 50%
4. 75%
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