HUMAN REPRODUCTION

• Human reproduction - any form of sexual reproduction resulting in human fertilization, typically involving sexual intercourse between a man and a woman.
• Human reproductive system - organ system by which humans reproduce and bear live offspring. 
• Reproduction - repetitive process/"again" -production of existing matter -repetitive production of humanity
• 2 types of reproduction: ▪︎Sexual reproduction

  ▪︎Asexual reproduction
• Sexual reproduction - reproduction that needs two opposite parents or sexes.
• Gamete - matured sperm cell from male; egg cell from female.
• Asexual reproduction •opposite of the sexual reproduction •reproduce without sex •no contact or intercourse
• Offspring - the product of the humans, animals, plants asexually or sexually. •scientific term base from genetics
• Male Reproductive System ●This includes a group of organs that make up the reproductive system and urinary system in men and people assigned male at birth (AMAB).
• Parts of the Male Reproductive Organ

  -Penis

  -Testicles

  -Scrotum

  -Epididymis

  -Vas Deferens

  -Prostate Glands

  -Ejaculatory Duct

  -Urethra

  -Seminal Vesicles

  -Bulbourethral Glands
• Penis - it delivers sperm
• Root - Base of your penis. It attaches to the wall of your abdomen.
• Glans (head) - most sensitive part of the penis
• Shaft (Body) - extends from the tip to where it connects to your lower belly. It looks like a tube.
• Scrotum - maintain and adjust depending the temperature
• Epididymis - brings the sperm to maturity
• Vas deferens - carries matured sperms into urethra
• Bulbourethral Glands - produce mucus that lubricates the urethra during ejaculation -gland that adds fluids to semen during ejaculation.
• Urethra - passageway through which urine passes out of the body, also serves as the pathway for semen.
• Seminal vesicles -two glands behind the bladder that secretes many of the semens components.
• Prostate gland -a walnut-sized gland that rests below your bladder, in front of your rectum.

  •separate the sperm and urine
• Testicles -two gonads that produces sperm by meiotic division (under meiosis) and it is a place where sperm stored.
• Ejaculatory ducts •Each testicle has a vas deferens that joins with seminal vesicle ducts to form ejaculatory ducts. •The ejaculatory ducts move through your prostate, where they collect fluid to add to semen.
• Phases of Male Orgasms

  -Excitement

  -Plateau

  -Orgasm

  -Resolution
• Excitement •Arousal •male attracted and easily amazed to figures. •This is the initial phase of sexual arousal.
• Plateau •Action

  •In this phase, sexual arousal continues to intensify.
• Orgasm •Release (sperm, emotions, and seminal fluids) •This is the climax of sexual pleasure.
• Resolution •cool down/rest •After orgasm, the body gradually returns to its pre-arousal state.
• Organizational level of organisms:

  Atom

  Molecules

  Cell

  Tissue

  Organs

  Organ System

  Organism

  Population
• Atom - smallest particle
• Molecules - two or more atoms
• Tissue - combination or group of cell
• Population - group of organism
• Organ system - group of organs that work together to perform one or more functions.
• Organism - all be seen by our naked eye
• Organs - group of tissue
• Cell - basic functional unit of an organism/life
• Egg Cell or Ovum - the biggest cell
• Mitosis - a process of cell division that results in two genetically identical daughter cells developing from a single parent cell.
• Meiosis - a process of cell division that reduces the number of chromosomes in parent cells by half and produces four gamete cells.