Skeletal system - cranium, Biology

CRANIUM -

  1. Large, hollow, rounded part of the skull.
  2. It's cavity is cranial cavity in it brain is protected. Such animals in which cranium present grouped in craniata.
  3. Cranium is formed of 8 flattened bones 1 frontal, 2 parital, 1 occipital, 2 temporals, 1 sphenoid and 1 ethmoid.
  4. The cranial bones fit together by wavy, immovable boundries called sutures.
  5. Pariatals are demrcated from the frontal by a coronal suture, from the occipital by lambdoidal suture and from the temporals by lateral sutures.
  6. A large hole called foramen magnum present from which brain comes out in the form of spinal cord.
  7. At the base of cranium 2 occipital condyles present attached to atals vertebrae forming a hinge joint that permits nodding of the head so skull is dicondylic.
  8. On either side of the cranium is an auditory capsule that contains 3 small bones called malleus, incus & stapes (helpful in hearing), stapes is smallest bone.
  9. So total 14 bones present in cranium & ear osicles.

2038_human skull.png

  158_skull.png

Posted Date: 10/2/2012 8:20:31 AM | Location : United States







Related Discussions:- Skeletal system - cranium, Assignment Help, Ask Question on Skeletal system - cranium, Get Answer, Expert's Help, Skeletal system - cranium Discussions

Write discussion on Skeletal system - cranium
Your posts are moderated
Related Questions
Explain about the Fermentation - methods of food processing? In contrast to other preservation methods, multiplication of microorganisms and their metabolic activities are enco


If jean-Baptiste de Lamarck was correct, than a. Natural selection would lead to the spread of favorable traits within a population b. Finches that stretched their beaks to access

Describe in detail about the Cytoplasm Cytoplasm also possesses a number of dense granular elements (about 25,000 per cell) called the ribosomes, which are the sites of protein

Explain about the Importance of Vitamin E in Human Body? Vitamin E is the generic term for tocopherols and tocopherols that have a Phenolic functional group on a chromane ring

IMPORTANCE OF MENDELISM 1 .       Improvement of Plants Hybridization is used for obtaining improved varieties of plants. This process results in combinations of desirable

Determine the working of Law of diminishing return According to the 'Law of diminishing return' the increase in the yield by a unit increase of the defi cient factor is proport

Q. Explain procedure of Aortic Valvuloplasty? BAV is usually performed by the retrograde transarterial approach. Often another catheter is placed in the LV through transseptal

Define Sample Preparation for Haemoglobin Content in Blood Wipe the index finger or middle finger with a cotton swab soaked in spirit. Prick the finger with a lancet op

How the artificial sweeteners are available as sugar substitute? Some of these are available as tablets, as sugar substitute and others appear as ingredients in many food produ