Nephron

Q.

The outer surface of kidney is _________ ( concave / cortex ).

Q. The glomerulus and Bowman's capsule together are known as the .

1. renal corpuscle
2. PCT
3. DCT
4. renal tubule

Q.

Assign the specific functions to the following organs with respect to excretion.

(a) Kidneys

(b) Glomerulus and Bowmans capsule.

(c) Tubular part of the nephron

(d) Urethra

(e) Urinary bladder

Q.

In which one of the following organisms, is its excretory organs correctly stated?

1. Earthworm - Pharyngeal, integumentary and septal nephridia

2. Humans - Kidneys, sebaceous glands and tear glands

3. Cockroach - Malpighian tubules and enteric caeca

4. Frog - Kidneys, skin and buccal epithelium

Q. Henle’s loop consists of

1. ascending and descending limb
2. collecting and descending limb
3. transverse and ascending limb
4. ascending and collecting duct

Q. The three-layered cell envelope in bacteria has

1. Cell wall as innermost layer
   
2. Outermost layer made of polysaccharides
   
3. A loose sheath called capsule
   
4. Outermost plasma membrane followed by glycocalyx
   

Q. In a nephron, _________ is a network of small blood vessels (capillaries).

1. Bowman’s capsule
2. Glomerulus
3. Henle’s loop
4. Collecting duct

Q.

what is the composition of the cell wall of archaebacteria

Q. Choose the correct statements about the anatomy of the kidney :
I. Kidney is located dorsolaterally and it is a retroperitoneal organ
II. There are two major types of nephrons - cortical nephron and juxtamedullary nephron
III. Size of the filtration slit of glomerulus is 80 nm
IV. Bowman’s capsule opens into DCT followed by loop of Henle and further by PCT

1. I, II and III only
2. I and II only
3. II, III and IV only
4. II, and IV only

Q.

Which portion of the nephron extends into the medulla?

1. Henle's loop

2. Proximal convoluted tube

3. Distal convoluted tube

4. Papillary duct

Q. Why do we pass more urine during winter and wet seasons?

1. Increased activity of kidneys
2. Increased ADH secretion
3. Decreased water absorption by nephrons
4. Reduced sweating

Q. is a portion of the kidney nephron between the loop of Henle and the collecting duct system.

1. Vasa recta
2. DCT
3. PCT
4. Renal vein

Q. Glomerulus and Bowman’s capsule together constitute

1. henle’s loop
2. collecting duct
3. juxtaglomerular apparatus
4. malpighian corpuscle

Q. From where does the peritubular capillaries arise from?

1. Afferent arterioles
2. Efferent arterioles
3. Renal Pelvis
4. none of the above

Q. Filtration slits are associated with the $\underset{–}{A}$ epithelial cells of $\underset{–}{B}$. Fill A and B by choosing the correct option.
$\begin{array}{cccc}& \text{A}& & \text{B}\\ \text{(1)}& \text{Outer}& \text{:}& \text{Glomerulus}\\ \text{(2)}& \text{Outer}& \text{:}& \text{Bowman’s capsule}\\ \text{(3)}& \text{Inner}& \text{:}& \text{Glomerulus}\\ \text{(4)}& \text{Inner}& \text{:}& \text{Bowman’s capsule}\end{array}$

1. $\left(2\right)$
2. $\left(4\right)$
3. $\left(3\right)$
4. $\left(1\right)$