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Related Concept Videos

Muscles of the Pelvic Floor and Perineum01:26

Muscles of the Pelvic Floor and Perineum

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The muscles of the pelvic floor and perineum are crucial for supporting the pelvic organs, controlling continence, and aiding in sexual function, childbirth, and core stability. They are typically divided into the superficial perineal layer and the deep pelvic floor layer.
Perineal Layer
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Anatomy of the Genitourinary System I: Kidneys and Ureters01:11

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The upper urinary system comprises two kidneys and two ureters, which are crucial in filtering blood and forming urine.KidneysLocation and Structure:The kidneys are two bean-shaped organs positioned behind the peritoneum on either side of the spine.Kidneys are between the 12th thoracic (T12) and the 3rd lumbar (L3) vertebrae.The position of the liver causes the right kidney to sit slightly lower than the left.Protective Layers:Each kidney is enveloped in a tough, fibrous membrane called the...
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Uterus and Cervix01:18

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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.
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Introduction to the Skeletal System01:20

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The skeletal system is the central framework of the body, consisting of different connective tissues: bones, cartilage, tendons, and ligaments.
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Bone, or osseous tissue, is a hard connective tissue that forms an internal support structure for the human body. Bones shield vulnerable organs and soft tissue from external forces. For example, the vertebral bones protect and support the spinal cord.
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Anatomy of the Genitourinary System II: Bladder and Urethra01:19

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The lower urinary system consists of the urinary bladder and urethra, which are essential in storing and expelling urine from the body. Together with the internal and external sphincters, these structures work together to regulate urination effectively.Anatomy of the BladderThe urinary bladder is a muscular, stretchable organ behind the pubic bone and in front of the rectum. In females, the bladder is positioned anterior to the vagina and inferior to the uterus, while in males, it is located...
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Internal Anatomy of the Kidney01:12

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The kidneys are essential organs in the human body, performing a myriad of tasks that maintain homeostasis and overall health.
Anatomical Position and Dimensions
The kidneys are retroperitoneal organs positioned against the posterior abdominal wall on either side of the spine, roughly between the twelfth thoracic and third lumbar vertebrae. Each kidney is typically 10-12 cm long, 5-6 cm wide, and 3-4 cm thick, weighing about 150 grams.
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Anatomy, Development, and Function of the Human Pelvis.

Jeremy M DeSilva1, Karen R Rosenberg2

  • 1Department of Anthropology, Dartmouth College, Hanover, New Hampshire, 03755.

Anatomical Record (Hoboken, N.J. : 2007)
|March 16, 2017
PubMed
Summary

The human pelvis is uniquely shaped for bipedalism and childbirth, showing significant sexual dimorphism. New research explores its anatomy, variation, and function, offering insights into evolutionary pressures.

Keywords:
bipedalismhomininobstetricspelvis evolution

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Area of Science:

  • Paleoanthropology
  • Human Anatomy
  • Evolutionary Biology

Background:

  • The pelvis is crucial for human locomotion and obstetrics.
  • It exhibits significant sexual dimorphism, making it a key area of study.
  • Understanding pelvic morphology is vital for evolutionary and biomechanical analyses.

Discussion:

  • The human pelvis's short, stout, and wide structure is an adaptation for bipedalism, present early in hominin evolution.
  • This specialized morphology contrasts with that of ancestral ape pelves.
  • New research investigates the intricate relationship between female pelvic form and locomotor function.

Key Insights:

  • Thirteen original research papers examine the modern human pelvis's anatomy, development, variation, and function.
  • These studies shed light on the selective pressures that have shaped the pelvis over time.
  • The research highlights the pelvis as a complex bone with implications for understanding human evolution.

Outlook:

  • This collection of research advances our understanding of pelvic evolution and function.
  • It raises new questions regarding pelvic dimorphism, locomotion, and obstetrics.
  • Future studies are expected to build upon these findings, inspiring further investigation into this complex skeletal element.