Question

1. All hormones are:

1. Steroids
2. Proteins
3. Inorganic compounds
4. Both steroids and proteins

2. Which of following is not a function of kidneys?

1. Maintain volume, pH and composition of body fluids
2. Remove excess toxic chemicals
3. Remove metabolic wastes
4. Synthesis of gamma globulins

3. A renal corpuscle includes the:

1. Glomerulus and glomerulus capsule
2. Glomerulus and renal tubule
3. Glomerulus capsule and renal tubule
4. Renal tubule and collecting tubule

4. A nephron consists of:

1. Renal corpuscle and renal tubule
2. Afferent and efferent arterioles
3. Cortex and medulla
4. Bladder and ureter

5. The _________conveys urine outside the body:

1. Ureter
2. Urethra
3. Collecting duct
4. Nephron loop

Answer 1

1. All hormones are: ANSWER Both steroids and proteins

EXPLANATION- there are various classes of hormones like amine hormone (eg- norepinephrine), peptide hormone (eg- oxytocin), protein hormone (eg- Human Growth Hormone) and steroid hormones (eg- testosterone and progesterone). The amine, peptide nad protein hormones are proteins and were are steroid hormones are having some sort of steroid structures in them.

2. Which of following is not a function of kidneys?  

ANSWER - Synthesis of gamma globulins

EXPLANTION- the role of kidney is to

1. Maintain volume, pH and composition of body fluids
2. Remove excess toxic chemicals
3. Remove metabolic wastes
4. maintain acid base balance
5. maintain water, electrolyte balance.
6. controlling blood pressure
7. producing erythropoietin
8. activating vitamin D etc

But kidney DOES NOT systhesis gamma globulins. Gamma-globulin is formed in the germinal centers of lymphatic nodules and in the cytoplasm of mature and immature plasma cells of two types-those with and those without Russell bodies.

3. A renal corpuscle includes the:

ANSWER- Glomerulus and glomerulus capsule

EXPLANATION- Renal corpuscle is a part of nephron, nephron consists of renal tubules, renal corpuscule and collecting duct along with renal corpuscle. but renal corpuscule consists of only glomerulus and glomerulus capsule.

4. A nephron consists of:

ANSWER - Renal corpuscle and renal tubule

EXPLANATION- A nephron consists of renal corpuscule, renal tubules, renal corpuscule and collecting duct and various sub parts in it like proximal convoluted tubule, loop of henle etc. In the options, afferent and efferent arterioles are not a part of nephron, they just supply blood to the nephron and cortex and medulla are areas in the kidney but are not a part of neohron and finally bladder and ureter are a part of urinary system but are not a part of nephron.

5. The _________conveys urine outside the body:

ANSWER- Urethra

EXPLANATION- collecting duct and nephron loop are a part of nephron which lie in the kidney. ureter connects kidneys to the bladder and it is the urethra that pushes the urine out of the body.