Topics for discussion 10-3

Topics for discussion 10-3 - Topics for discussion...

Info iconThis preview shows pages 1–16. Sign up to view the full content.

View Full Document Right Arrow Icon
Topics for discussion Personhood, abortion, beginning of life issues…. .
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Questions for thought……. What and when is LIFE…. .?
Background image of page 2
BIOLOGICAL DEFINITION Life is a characteristic that distinguishes objects that have signaling and self-sustaining processes (biology) from those that do not, either because such functions have ceased (death), or else because they lack such functions and are classified as inanimate.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
More Biology…… In biology, the science of living organisms, life is the condition which distinguishes active organisms from inorganic matter. Living organisms : undergo metabolism maintain homeostasis possess a capacity to grow respond to stimuli reproduce
Background image of page 4
Last of the Biology More complex living organisms can communicate through various means. A diverse array of living organisms (life forms) can be found in the biosphere on Earth, and the properties common to these organisms—plants, animals, fungi, protists, archaea, and bacteria—are a carbon- and water- based cellular form with complex organization and heritable genetic information.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Other perspectives…. . In philosophy and religion the conception of life and its nature varies. Both offer interpretations as to how life relates to existence and consciousness, and both touch on many related issues, including life stance, purpose, conception of a god or gods, a soul or an afterlife.
Background image of page 6
At what point do you think that a human being, with human rights, comes into existence? Is it at birth, or earlier?
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
What keeps us from legalizing infanticide?
Background image of page 8
Why is this argument any more, or less, reasonable than the argument that:"There is a lack of consensus about when human life begins; therefore, abortion should be allowed throughout pregnancy?"
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 10
From Egg to Embryo Pregnancy – events that occur from fertilization until the infant is born Conceptus – the developing offspring Gestation period – from the last menstrual period until birth Preembryo – conceptus from fertilization until it is two weeks old Embryo – conceptus during the third through the eighth week Fetus – conceptus from the ninth week through birth
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Relative Size of Human Conceptus Figure 28.1
Background image of page 12
Accomplishing Fertilization The oocyte is viable for 12 to 24 hours Sperm is viable 24 to 72 hours For fertilization to occur, coitus must occur no more than: Three days before ovulation 24 hours after ovulation Fertilization – when a sperm fuses with an egg to form a zygote
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Sperm Transport and Capacitation Fates of ejaculated sperm Leak out of the vagina immediately after deposition Destroyed by the acidic vaginal environment Fail to make it through the cervix Dispersed in the uterine cavity or destroyed by phagocytic leukocytes non self Reach the uterine tubes Sperm must undergo capacitation before they can penetrate the oocyte
Background image of page 14
Acrosomal Reaction and Sperm Penetration An ovulated oocyte is encapsulated by:
Background image of page 15

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 16
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/04/2011 for the course BIOL 4486 taught by Professor Staff during the Fall '08 term at Kennesaw.

Page1 / 209

Topics for discussion 10-3 - Topics for discussion...

This preview shows document pages 1 - 16. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online