Anatomy News

Humans are Evolving Extra Artery in Forearm: Median Artery

Lucas et al. find that the prevalence of the persistent median artery in postnatal life approximately tripled over the last 125 years. Image credit: C.M. Da Silva.
Oct 12, 2020 by News Staff

The median artery of the human forearm is an example of microevolutionary changes in the internal anatomy of the human body, according to new research by scientists from Flinders University, the University of New South Wales, the University of Adelaide and the University of Zurich. Lucas et al. find that the prevalence of the persistent median artery in postnatal life approximately tripled over the last 125 years. Image credit: C.M. Da Silva. The...

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Reconstruction of a Neanderthal. Image credit: Neanderthal Museum.

Neanderthals’ Deep and Short Ribcage was Already Present at Birth

Oct 8, 2020 by Enrico de Lazaro

An international team of researchers has virtually reconstructed the ribcages of four Neanderthal individuals from birth to around 3 years old and found...

This is an artist's reconstruction of Homo erectus. Image credit: Yale University.

Homo erectus Had Stocky Body Shape

Jul 8, 2020 by News Staff

An international team of researchers has created the first 3D reconstruction of the ribcage of the Turkana Boy, a skeleton of the juvenile Homo erectus...

High-resolution microCT image of the chimpanzee’s os cordis. Image credit: Moittié et al, doi: 10.1038/s41598-020-66345-7.

Some Chimpanzees Have Tiny Bone in Their Heart

Jun 11, 2020 by Enrico de Lazaro

A team of researchers in the UK has discovered that some individuals of the common chimpanzee (Pan troglodytes), particularly those affected by myocardial...

King Charles II of Spain was the last in the Habsburg line and one of the most afflicted with the facial deformity.

‘Habsburg Jaw’ Was Result of Inbreeding, New Research Confirms

Dec 3, 2019 by News Staff

A facial condition called the ‘Habsburg jaw’ (mandibular prognathism) owes its name to its high prevalence in the Habsburg dynasty of Spanish and Austrian...

In human skulls, division of the nasioiniac arc (from nasion to inion, NI) by bregma into a shorter frontal arc (from nasion to bregma, NB) and longer parietooccipital arc (from bregma to inion BI), creates a geometrical relationship in which the ratio of the nasioiniac arc over the bregma-inion arc (NI/BI) coincides with the ratio of the bregma-inion arc over the nasion-bregma arc (BI/NB), both 1.6. The subdivision of the nasioiniac arc by bregma into two unequal arcs emulates the geometrical division of a line into the Golden ratio. Image credit: Tamargo & Pindrik, doi: 10.1097/SCS.0000000000005610.

Human Skull Dimensions Follow Golden Ratio: Study

Oct 7, 2019 by News Staff

The Golden ratio principle is present in the architecture and evolution of the human skull, suggests a new study by researchers from the Johns Hopkins...

Dorsal view of the left hand of a 10-week old human embryo. The dorsometacarpales are highlighted: these muscles are present in adults of many other limbed animals, while in humans they normally disappear or become fused with other muscles before birth. Image credit: Diogo et al, doi: 10.1242/dev.180349.

Human Embryos Have ‘Lizard-Like’ Limb Muscles: Study

Oct 2, 2019 by News Staff

A new study, published in the journal Development, has confirmed the transient presence of atavistic muscles — present in our ancestors, but normally...

A portrait of a juvenile female Denisovan based on a skeletal profile reconstructed from ancient DNA methylation maps. Image credit: Maayan Harel.

Scientists Reconstruct Skeletal Anatomy of Denisovans

Sep 19, 2019 by News Staff

A team of researchers from Israel and Spain has produced reconstructions of Denisovans, an extinct sister group of Neanderthals, based on patterns of methylation...

The structure of the Eustachian tube in a Neanderthal man. Image credit: SUNY Downstate Health Sciences University.

Chronic Ear Infections Contributed to Neanderthal Extinction

Sep 19, 2019 by News Staff

Neanderthals may have been doomed to extinction because they had persistent, life-long ear infections due to the structure of their Eustachian tubes, a...

A reconstruction of a Neanderthal man. Image credit: Neanderthal Museum.

Denisovan Fingers are Indistinguishable from Those of Modern Humans, Researchers Say

Sep 5, 2019 by Enrico de Lazaro

An international team of scientists from Canada and Europe has identified the missing part of a fifth finger bone from the Denisova Cave, revealing that...

Denisovans were probably dark-skinned, unlike the pale Neanderthals. The picture shows a Neanderthal man. Image credit: Trustees of the Natural History Museum, London.

Modern Asians Acquired Rare Dental Trait from Denisovans: Study

Jul 10, 2019 by News Staff

A 3-rooted lower molar, a rare trait primarily found in modern Asian lineages, was previously thought to have evolved after Homo sapiens dispersed from...

A radiograph of a 28-year-old male participant. Image credit: Shahar & Sayers, doi: 10.1038/s41598-018-21625-1.

Study: Young People are Developing ‘Hornlike Spikes’ at Back of Their Skull Due to Poor Posture

Jun 26, 2019 by News Staff

Aberrant postures have led to an increase in young adults developing a bone growth at the back of the skull, according to a study by University of the...

Large (left), medium (center), and small (right) fabellae (a small bone to the right of each image) in the right knees of three female subjects. Image credit: Berthaume et al, doi: 10.1111/joa.12994.

Fabella: Humans Were Losing Osteoarthritis-Linked Knee Bone, Now It’s Making Comeback

Apr 23, 2019 by News Staff

The fabella (Latin for ‘little bean’), a small bone in a tendon behind the knee, was once rare in humans. Now, a team of researchers from the Department...

Trans-Cortical Vessels: Scientists Discover New Type of Blood Vessel in Long Bones

Jan 23, 2019 by News Staff

The newly-discovered ‘trans-cortical vessels’ connect the bone marrow with the periosteal circulation, according to new research published in the journal...

The endorestiform nucleus is found near the brain-spinal cord junction. Image credit: George Paxinos, Neuroscience Research Australia.

Australian Neuroscientist Discovers Hidden Region in Human Brain: Endorestiform Nucleus

Nov 23, 2018 by News Staff

Professor George Paxinos from Neuroscience Research Australia has discovered a hidden region of the human brain. The endorestiform nucleus is found near...

Immune cells gather at the SPF. The purple band represents the surface of the SPF. Image credit: Imogen Moran / Tri Giang Phan.

Researchers Discover New ‘Micro-Organ’ in Human Immune System

Aug 27, 2018 by News Staff

A team of scientists at the Garvan Institute of Medical Research, Australia, has identified a new anatomical structure within the human immune system....

Three scans (from the front, side and above) of two different brains (pictured on the left and on the right) belonging to twins; the furrows and ridges are different in each person. Image credit: Lutz Jäncke, University of Zurich.

Our Brains are as Unique as Our Fingerprints, Neuroscientists Say

Jul 13, 2018 by News Staff

Every individual has a unique brain anatomy, according to new research from the University of Zurich in Switzerland; and this uniqueness is the result...

Forensic facial reconstruction of another Australopithecus species - A. afarensis. Image credit: Cicero Moraes / CC BY-SA 3.0.

4-Million-Year-Old Skull of Australopithecus Shows Similarities to That of Modern Humans

Jun 27, 2018 by News Staff

An Australopithecus partial cranium found in the Jacovec Cavern of the Sterkfontein Caves, South Africa, one of the richest early hominin fossil localities...

Social gathering of six bonobos at San Diego Zoo. Image credit: William H. Calvin, University of Washington / CC BY-SA 4.0.

First Detailed Anatomical Study of Bonobos Contradicts Key Dogmas about Human Evolution

May 24, 2018 by News Staff

Bonobos (Pan paniscus) and other apes, such as common chimpanzees (Pan troglodytes) and gorillas (Gorilla sp.), have muscles long-believed to be only...

A Homo heidelbergensis, a Neanderthal and a Cro-Magnon. Image credit: SINC / José Antonio Peñas.

Mobile Eyebrows Played Important Role in Human Survival, Research Suggests

Apr 10, 2018 by News Staff

New research published in the journal Nature Ecology & Evolution contributes to a long-running debate about why archaic hominins had gigantic brow...

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