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Related Concept Videos

Regional Terms01:12

Regional Terms

17.5K
Regional terms describe anatomy by dividing the body parts into different regions that contain structures involved in contributing similar functions. Using these terms helps increase the accurate description and identification of the particular region of interest or region affected by the disease.
Primarily, the human body has two major regions, the axial and appendicular regions. The axial region comprises regions from the head to the abdomen and makes up the central body axis. In contrast,...
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To promote clear communication, for instance, about the location of a patient's abdominal pain or a suspicious mass, anatomists and clinicians typically use imaginary lines to categorize the abdominopelvic cavity into either four quadrants or nine regions to identify organs in the cavity.
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Fetal Circulation01:14

Fetal Circulation

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Fetal circulation is a unique system that facilitates the exchange of gases, nutrients, and waste products between the developing fetus and the mother. This intricate process takes place through a special organ called the placenta.
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Accessory Glands of the Male Reproductive System01:16

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The accessory ducts involved in sperm maturation and transportation include the epididymides, vasa deferentia, ejaculatory ducts, and urethra. These ducts play a critical role in the maturation, storage, and transportation of sperm from the testes to the urethra, where it is then released during ejaculation.
The epididymis is a small, comma-shaped organ located at the back of each testicle. The epididymis can be divided into three main parts: the head, body, and tail. The head of the epididymis...
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Uterine Tubes01:16

Uterine Tubes

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The uterine or fallopian tubes function as the conduit through which oocytes travel from the ovaries to the uterus. Each fallopian tube measures approximately 10 to 13 cm long and is anatomically divided into the infundibulum, ampulla, isthmus, and interstitial part (or intramural segment). The infundibulum is characterized by its funnel shape and features extensions called fimbriae which reach towards the peritoneal cavity. These fimbriae play a critical role during ovulation as they extend...
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Uterus and Cervix01:18

Uterus and Cervix

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The uterus, commonly called the womb, is a vital reproductive organ in females designed to provide a nurturing environment for the implantation and growth of an embryo. It is shaped like a hollow pear and positioned between the urinary bladder and the rectum. The uterus's structure allows it to support and protect a developing fetus throughout pregnancy.
The uterus is securely anchored within the pelvic cavity by paired broad ligaments on either side. It is further stabilized by three pairs...
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Related Experiment Video

Updated: May 2, 2026

Dissection of 6.5 dpc Mouse Embryos
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Dissection of 6.5 dpc Mouse Embryos

Published on: February 25, 2007

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Baby Parts.

Rose Hershenov1

  • 1Niagara University, Niagara University, USA.

The Journal of Medicine and Philosophy
|January 9, 2026
PubMed
Summary
This summary is machine-generated.

This study argues the fetus is biologically separate from the mother, not a maternal part. The placenta marks the point of topological discontinuity, indicating the fetus is a distinct organism.

Keywords:
fetusorganismparthoodplacenta

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Area of Science:

  • Philosophy of Biology
  • Bioethics
  • Developmental Biology

Background:

  • The individuation of an organism is crucial for understanding biological and ethical distinctions.
  • Elselijn Kingma's work proposes four criteria to assess the fetus-mother relationship: homeostasis, metabolic/functional integration, topological continuity, and immunological tolerance.
  • Kingma concludes the fetus is a maternal part, with the placenta as a shared organ.

Purpose of the Study:

  • To re-evaluate Elselijn Kingma's four criteria for organism individuation.
  • To argue that the fetus is mereologically distinct from the mother.
  • To establish the placenta as a fetal part, not a shared organ.

Main Methods:

  • Application of Kingma's four criteria (homeostasis, metabolic/functional integration, topological continuity, immunological tolerance).
  • Philosophical analysis of organism individuation.
  • Argumentation based on topological discontinuity at the placenta.

Main Results:

  • The fetus is mereologically distinct from the mother.
  • The fetus is not a maternal part.
  • The placenta represents the point of topological discontinuity, signifying the fetus as a separate entity.

Conclusions:

  • The fetus is an independent organism, not a part of the mother.
  • The placenta functions as a fetal organ, marking the boundary between distinct biological entities.
  • Reinterpretation of topological continuity criteria supports fetal distinctness.