Question

1.  Which is not one of the primary substances regulated by the kidney?

A) glucose  (B) water  (C) salt  (D) urea.

2.  The ‘tube’ leading from the kidney to the bladder is the;

(A) urethra  (B) renal artery  (C) renal vein (D) ureter.

3.  Which of the following is a function of the testes

(A) sperm production (B) sperm storage (C) seminal fluid production (D) progesterone production (E) none of the above.

4.  A single germ cell yields how many mature sperm cells? (A) 1    (B) 2    (C) 3    (D) 4    (E) 5.

5.  The prostate gland functions in

(A) stimulating ejaculation (B) adding seminal fluids to the sperm   (C) nursing the developing sperm (D) secreting testosterone (E) none of the above.

6.  Ovulation is a term used to describe the  

(A) union of male and female nuclei (B) release of a secondary oocyte (C) production and release of follicle stimulating hormone and luteinizing hormone by the pituitary gland (D) breakdown and shedding of the uterine wall from the previous ovarian cycle   (E) none of the above.

7. The point at which the developing embryo attaches to the endometrium is called  

(A) ovulation (B) fertilization (C) implantation (D) menstruation (E) none of the above.

8. Prior to the beginning which process(es) of cell division are the chromosomes copied?  

(A) mitosis  (B) meiosis 1  (C) meiosis 2  (D) both A and B  (E) A, B and C.

Answer 1

Question 1

Kidney is the main excretory organs of our body which is situated at back of abdomen.It is bean shaped outer is layer is cortex and inner layer is medulla. Main functional unit of kidney is Nephron

Main function of kidney

To maintain water fluid level in body

Maintain ion concentration like sodium, potassium and calcium level

Maintain pH level

Remove toxin and waste product like urea and excess water from body

Secrete hormones like Erythropoietin which important for RBC production in body

Kidney - maintain water salt balano Elunenale Nitrogenous weue Lie Vrea NH₃ & Vare ach release brow b. Creatinine C MUSELO Hormones Renin 1,25 dikey dioxy cholcalciphenol Erythere poetin Gluconeogenesis I a. a Glucose 7 Mainteun Acid Base balance voue in meuntenance & Blood Ph. Renan og Renal Astery Renal 7. Pyramid Urinary bladde Pewis screthra plok Surete nephrons

Colomernes oopillon -Bowman capca Alleret mesto Scollochne duct Abe/L <> Neprion CcJ014 - Pelvis AAAfferent Astencia En Eferent cretos COL) Descending JAUH) Asundik Urinarey bladder Thick Thin > Collectia dese Be natte macula atensa & Juxtatilorstures capillary •Renon

filteration in Bowman cap RBE Bendogecolam Blood B.P79 t poolen memp. *Podoyle Bowman Capsel filletten SICH formed by Podocyle I - The chay À Fiferation of uncharged molecule based upon their moleculae radius Fillerahond charged molecule Regardless of their mol size filterahon depend opon their I charge. . I Dibunun small size can't enter Las it is Ovely changed

cerm n o 8 co derm no Acid base balance Acid past of Blood. Maintain at lungs teus to CH ₂ CO 2 otco, 2 Echale Base pout - maintoun at Kidney level Hoog ↑ = Reabsorption d from thephson Hog b = Reabsorphou on Nephron ਦੀ 14 ਸੰਘਰ Tissue fluid lumen isheria Nat A Nat Нco, H2 4 I HOBH CO 3 H₂CO H₂CO3 . + to Ho + coco

Hence primary substance regulated by kidney is water as kidney balance body fluid and excrete excess water ti maintain blood pressure

Urea as it remove toxic products like urea from body through urine

Salt as it maintain ion concentration in body like sodium, potassium and calcium hence option2,3&4 can be eliminated

Option 1 glucose is correct answer as reabsorption is not primary function of kidney

Hence Answer is option 1

Question 2

Kidney is the main excretory organ of body and is small bean shaped present in pair at back of abdomen

Its main function is to maintain osmolarity and excrete toxic substances from body

Desc. Aorta Renal artery I left kidney Renal vein Right sidney -IVC Right ureter - left writer urinary Bladder Furethra

It consist of pair of ureter which is tube like structure connect each kidney to urinary bladder 1 urinary bladder where urine is stored,1 urethra from where urine is passed and blood vessel renal artery and renal vein

The tube leading from kidney to urinary bladder is Ureter

Hence Option D is correct answer other option can be eliminated

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