In human body, which one of the following is anatomically correct?
Floating ribs - 2 pairs
Collar bones - 3 pairs
Salivary glands - 1 pair
Salivary glands - 1 pair
A.
Floating ribs - 2 pairs
Which of the following hormones can play a significant role in osteoporosis?
Aldosterone and Prolactin
Progesterone and Aldosterone
Parathyroid hormone and Prolactin
Estrogen and Parathyroid hormone
The contractile protein of skeletal muscle involving ATPase activity is
tropomyosin
myosin
α-actinin
α-actinin
Out of 'X' pairs of ribs in humans only 'Y' pairs are true ribs. Select the option that correctly represents values of X and Y and provides their explanation :
X = 12, Y = 7
True ribs are attached dorsally to vertebral column and ventrally to the sternum
X = 12, Y = 5
True ribs are attached dorsally to vertebral column and sternum on the two ends
X = 24, Y = 7
True ribs are dorsally attached to vertebral column but are free onventral side
X = 24, Y = 7
True ribs are dorsally attached to vertebral column but are free onventral side
Match the items given in Column I with those in Column II and select the correct option given below
Column I | Column II | ||
a | Glycosuria | i | Accumulation of uric acid in joints |
b | Gout | ii | Mass of crystallised salts within the kidney |
c | Renal calculi | iii | Inflammation in glomeruli |
d | Glomerular nephritis | iv | Presence of in glucose urine |
a | b | c | d |
iii | ii | iv | i |
a | b | c | d |
i | ii | iii | iv |
a | b | c | d |
iv | i | ii | iii |
a | b | c | d |
ii | iii | i | iv |
Which of the following is a flowering plant with nodules containing filamentous nitrogen-fixing micro-organism
casuarina equisetifolia
crotalaria juncea
cycas revoluta
cycas revoluta
Calcium is important in skeletal muscle contraction because it
Binds to troponin to remove the masking of active sites on actin for myosin.
Activates the myosin ATPase by binding to it.
Prevents the formation of bonds between the myosin cross bridges and the actin filament.
Detaches the myosin head from the actin filament.
A baby boy aged two years is admitted to play school and passes through a dental check-up. The dentist observed that the boy had twenty teeth.
Which teeth were absent?
Incisors
Canines
Pre-molars
Pre-molars
The pivot joint between atlas and axis is a type of
Fibrous joint
Cartilaginous joint
Synovial joint
Synovial joint
Which of the following is an example of negative feedback loop in humans?
constriction of skin blood vessels and contraction of skeletal muscles when it is too cold
secretion of tears after falling of sand particles into the eye
salivation of mouth at the sight of delicious food
salivation of mouth at the sight of delicious food