a. TIBC (total iron binding capacity)

b. MCV (mean cell volume) 

c. ferritin

d. MCH (mean cell haemoglobin)

e. MCHC (mean cell haemoglobin concentration)

Answera.F   b.T   c.T   d.T   e.T
The blood film shows hypochromic microcytic anaemia.
The MCV, MCH and MCHC are reduced.
The serum ferritin and iron are also reduced but the TIBC is increased.

2. The following are true about parathyroid hormone :
 

a.  it is an 84 amino acid peptide hormone

b. it increases calcium absorption from the gastrointestinal 
    tract

c. it acts on a cell surface receptor that increases intracellular 
    cyclic AMP 

d. it increases calcium release from bone 

e. it increases production of 1,25 dihydroxy-vitamin D3 in the 
     kidney 

Answera.T   b.T   c.T   d.T   e.T
Parathyroid hormone increases serum calcium by releasing calcium from bone and increases gastrointestinal absorption. 
 

a. is synthesized by the posterior lobe of the pituitary gland

b. is released by neurosecretion

c. its secretion is increased by a low plasma osmolarity

d. increases the permeability of the distal convoluted tubule

e. its secretion is increased in early post-operative period

Answera.F   b.T   c.F  d.F   e.T
ADH is released by neurosecretion from the posterior pituitary gland. The cell bodies of the neurosensory cells are found in the supraoptic and paraventral nuclei of the hypothalamus.
It is released in response to an increase in plasma concentration.
It acts by increasing the water reabsorption by the renal collecting ducts.
Increased ADH is seen in the early postoperative period
 

a. iodide ions enter the follicle cells by passive diffusion 

b .T4 and T3 bind to the receptors in nuclei 

c. thyroxine, once synthesized, is coupled to thyroglobulin 
    until released 

d. a greater proportion of tri-iodothyronine is formed when 
    iodine is deficient 

e. thyroid hormones increase the number of b receptors in 
    myocardium 

Answera.F   b.T   c.T   d.F   e.T
The iodide ions enter the follicle by active transport.
Thyroid hormones enter the cell and bind to the nuclear membrane receptors
T4 is converted to T3 in the periphery. T3 is more active than T4 as it binds more readily and acts faster.
Thyroid hormones increase the sensitivity of the myocardium to the sympathetic nervous system.
 

a. it increases the amount of Na+-K+ ATPase in the target 
    cells 

b. it reduces the sodium content of the sweat 

c. it increases the acidity of urine 

d. it increases the potassium content of urine 

e. the basal secretion is normal even after hypophysectomy

Answera.T   b.T   c.T   d.T   e.T
Aldosterone secretion is not directly controlled by the pituitary gland. It regulate the salt balance and the extracellular volume. It increases the secretion of bicarbonate ions and therefore increases the acidity of urine.