Glands
Referred to as the master gland (organ).
Pituitary gland
How do shoulders and chest change in boys during puberty?
Boys develop broader shoulders and wider chests during puberty.
What are the natural balanced food for infants and adults?
Infants: Mother's milk
Adult: Balanced diet which include all 7 nutrients.
What element is needed for thyroxine production?
Iodine.
What is the most conspicuous change during puberty?
Sudden increase in height.
A problem created by the sebaceous glands
What is the acne ?
Authors of 2001 study that states that 88% of girls and 83% of boys reach puberty by age 14, Why?
Girls hit puberty earlier than boys. (In girls, adolescence may begin a year or two earlier than in boys. )
Is uterus thickening permanent or temporary and Why?
No it is not permanent. uterus thickening happens every month in anticipation of the fetus, however when there is no fertilization, the uterine wall degenerates and is released from the body as blood and mucus.
The female gonads and its hormone released
Ovaries, Estrogen
What are the causes of AIDS?
AIDS is caused by a dangerous virus called HIV , this virus can pass on to a normal person from an infected person by Infected blood, Infected needles, sexual contact, Infected mother to her baby before birth, Injectable Drug Abuse.
What is the function of adrenalin hormone in the body?
Adrenals also produce the hormone adrenalin. It helps the body to adjust to stress when one is very angry, embarrassed or worried.
Arrange the following events related to insulin production and its function in the correct order:
2 - 1 - 5 - 3 - 4.
Why is exercise important during adolescence?
Keep body fit and healthy, builds up stamina.
What is the effect of a larger voice box in grown up boys?
The bigger voice box in boys gives deeper voice or low pitched voice to the boys. In adolescent boys, sometimes, the muscles of the growing voice box go out of control and the voice becomes hoarse.
Why early marriage and motherhood is harmful to the girls?
Early marriage and motherhood cause health problems in the mother and the child. It also curtails employment opportunities for the young woman and may cause mental agony as she is not ready for responsibilities of motherhood.
Total number of chromosomes present in:
Sperm:
Unfertilized egg:
Fetus:
Sperm: 22+X/ 222+Y
Unfertilized egg: 22+X
Fetus: 44+XX/ 44+XY
Give a suitable word for each of the following statements.
(a) The site which responds to a hormone.
(b) Name of a gland which transports secretions through ducts.
(c) Chemicals which control changes at adolescence stage.
(d) It marks the beginning of reproductive period.
a) Target site
b) exocrine gland- sweat gland
c) hormones
d) puberty
Given below are events that lead to pregnancy and development of embryo.
(i) Fertilisation of egg
(ii) Maturation of egg
(iii) Release of egg
(iv) Embedding of embryo in uterus
Which of the following options gives the correct order of sequence in which they occur?
(a) (i), (ii), (iii), (iv) (b) (ii), (i), (iii), (iv)
(c) (i), (iv), (ii), (iii) (d) (ii), (iii), (i), (iv)
(d) The events in sequence are:
– Maturation of egg after puberty in the ovaries of a woman.
– Release of egg call.
– Fertilisation of egg cell by sperm to form a zygote.
– Zygote divides repeatedly to form an embryo.
– Embryo is embedded in wall of uterus for further development to foetus.