•  
agra,ahmedabad,ajmer,akola,aligarh,ambala,amravati,amritsar,aurangabad,ayodhya,bangalore,bareilly,bathinda,bhagalpur,bhilai,bhiwani,bhopal,bhubaneswar,bikaner,bilaspur,bokaro,chandigarh,chennai,coimbatore,cuttack,dehradun,delhi ncr,dhanbad,dibrugarh,durgapur,faridabad,ferozpur,gandhinagar,gaya,ghaziabad,goa,gorakhpur,greater noida,gurugram,guwahati,gwalior,haldwani,haridwar,hisar,hyderabad,indore,jabalpur,jaipur,jalandhar,jammu,jamshedpur,jhansi,jodhpur,jorhat,kaithal,kanpur,karimnagar,karnal,kashipur,khammam,kharagpur,kochi,kolhapur,kolkata,kota,kottayam,kozhikode,kurnool,kurukshetra,latur,lucknow,ludhiana,madurai,mangaluru,mathura,meerut,moradabad,mumbai,muzaffarpur,mysore,nagpur,nanded,narnaul,nashik,nellore,noida,palwal,panchkula,panipat,pathankot,patiala,patna,prayagraj,puducherry,pune,raipur,rajahmundry,ranchi,rewa,rewari,rohtak,rudrapur,saharanpur,salem,secunderabad,silchar,siliguri,sirsa,solapur,sri-ganganagar,srinagar,surat,thrissur,tinsukia,tiruchirapalli,tirupati,trivandrum,udaipur,udhampur,ujjain,vadodara,vapi,varanasi,vellore,vijayawada,visakhapatnam,warangal,yamuna-nagar
Human Reproductive System

Human Reproductive System Definition and Diagram
 

Introduction:

  • Humans are dioecious or unisexual or exhibit sexual dimorphism, i.e., male and female individuals are differentiated externally.
  • Humans reproduce sexually by the fusion of male and female gametes produced in their respective reproductive system.
  • The steps involved in the human reproductive system are:
    - Gametogenesis
    - Insemination
    - Internal fertilization
    - Zygote formation
    - Embryogenesis
    - Gestation
    - Parturition
  • The gametes in male and female are sperm and egg that are formed in the primary sex organs called testes and ovaries, respectively.
  • Organs other than the primary sex organs are called secondary sex organs such as reproductive glands, external genitalia, accessory glands, etc.
  • Males and females are externally differentiated through secondary sexual characters or sexual dimorphic characters.
  • Few differentiating secondary sexual characters of males are beard, moustache, hair on the chest, muscular body, enlarged larynx (Adam's apple).
  • Whereas in females the secondary sexual characters are developed breast, broader pelvis and high pitched voice.

Topics covered:

  • Puberty
  • Male reproductive system
  • Female reproductive system
  • Gametogenesis
  • Menstrual cycle
  • Fertilization
  • Placentation
  • Pregnancy
  • Lactation
  • Disorders of reproductive system

Quiz

1. Sertoli cells are regulated by the pituitary hormone known as -
(1) FSH
(2) GH
(3) Prolactin
(4) LH

2. Withdrawal of which of the following hormones is the immediate cause of menstruation?
(1) Estrogen
(2) FSH
(3) FSH-RH
(4) Progesterone

3. In the human female, menstruation can be deferred by the administration of -
(1) FSH only
(2) LH only
(3) Combination of FSH and LH
(4) Combination of estrogen and progesterone

4. Which part of the ovary in mammals acts as an endocrine gland after ovulation?
(1) Vitelline membrane
(2) Graffian follicle
(3) Stroma
(4) Germinal epithelium

5. Which one of the following statements is incorrect about menstruation?
(1) At menopause in the female, there is especially abrupt increase in gonadotropic hormones
(2) The beginning of the cycle of menstruation is called menarche
(3) During normal menstruation about 40 ml blood is lost
(4) The menstrual fluid can easily clot

6. Which extraembryonic membrane in humans prevents desiccation of the embryo inside the uterus?
(1) Yolk sac
(2) Amnion
(3) Chorion
(4) Allantois

7. In human adult females oxytocin -
(1) Stimulates pituitary to secrete vasopressin
(2) Causes strong uterine contractions during parturition
(3) is secreted by anterior pituitary
(4) stimulates growth of mammary glands

8. In humans, at the end of the first meiotic division, the male germ cells differentiate into the -
(1) Spermatids
(2) Spermatogonia
(3) Primary spermatocytes
(4) Secondary spermatocytes

9. Seminal plasma in humans is rich in -
(1) Fructose and certain enzymes but poor in calcium
(2) Fructose, calcium and certain enzymes
(3) Fructose and calcium but has no enzymes
(4) Glucose and certain enzymes but has no calcium

10. The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis is -
(1) Spermatogonia - Spermatid - Spermatocyte - Sperms
(2) Spermatocyte - Spermatogonia - Spermatid - Sperms
(3) Spermatogonia - Spermatocyte - Spermatid - Sperms
(4) Spermatid - Spermatocyte - Spermatogonia - Sperms

Answer Key:

1.  (1)
2.  (4)
3.  (4)
4.  (2)
5.  (4)
6.  (2)
7.  (2)
8.  (4)
9.  (2)
10.  (3)

Related Topics to Human Reproductive System in BIology

NCERT Class 12 Biology Chapters

Reproduction In Organisms Sexual Reproduction Flowering Plants Human Reproduction
Reproductive Health Principles of Inheritance Variation Molecular Basis of Inheritance
Evolution Human Health and Diseases Strategies for Food Enhancement in Reproduction
Microbes in Human Welfare Solutions Biotechnology Principles and Processes Biotechnology and Its Applications
Organisms and Populations Ecosystem Biodiversity and its Conservation
Environmental Issues

NEET Related Links

NEET Exam 2024

NEET 2024 Exam Dates

NEET 2024 Exam pattern

NEET 2024 Syllabus

NEET 2024 Eligibility Criteria

NEET 2024 Application

NEET UG Counselling

NEET FAQ

NEET UG Result

NEET 2024 Cut Off

Neet 2023 Toppers List Names & Rank

Neet Result 2023 Toppers list rank cut off

Neet Answer key Live Download PDF

Neet 2023 State Toppers List

JEE MAIN Related Links

JEE Main 2024

JEE Main Rank Predictor 2024

JEE Main College Predictor 2024

JEE Main 2024 Exam Dates

JEE Main 2024 Exam pattern

JEE Main 2024 Application

JEE Main 2024 Eligibility Criteria

JEE Main 2024 Syllabus

JEE Main 2024 Physics Syllabus

JEE Main 2024 Maths Syllabus

JEE Main 2024 Chemistry Syllabus

JEE Main 2024 Admit Card

JEE Main 2024 Counselling

JEE Main marks vs rank vs percentile

JEE Advanced Result 2023 live topper list

JEE Exam Preparation - How to calculate your rank jee

JEE Maths Syllabus - Important topics and weightage

JEE Advanced Related Links

JEE Advanced 2024 Exam Dates

JEE Advanced 2024 Application

JEE Advanced 2024 Eligibility Criteria

JEE Advanced 2024 Syllabus

JEE Advanced 2024 Maths Syllabus

JEE Advanced 2024 Physics Syllabus

JEE Advanced 2024 Chemistry Syllabus

JEE Advanced Exam Result

JEE Advanced Exam Dates

JEE Advanced Registration Dates

CUET Related Links

CUET 2024 Eligibility Criteria

CUET 2024 Admit Card

CUET 2024 Exam Pattern

CUET 2024 FAQs

CUET 2024 Counselling

CUET 2024 Syllabus

CUET 2024 Result

CUET 2024 Answer Key

CUET 2024 Preparation

CUET CUTOFF

CUET 2024 Application Form

Talk to our expert
Resend OTP Timer =
By submitting up, I agree to receive all the Whatsapp communication on my registered number and Aakash terms and conditions and privacy policy