Question

1- Why is the sphenoid bone named the keystone of the cranial bones? 2- Name the bones that articulate with the sphenoid bone, starting at the crista galli of the ethmoid bone and going in a clockwise direction. 3- Which curves of the adult vertebral column are concave (relative to the anterior side of the body)? 4- What is the purpose of the anatomical curvature of the vertebral column? 5- Which parts of the humerus articulate with the radius at the elbow? With the ulna at the elbow? 6- Fractures of the humerus may cause impairment of arm and hand movements. 7- Why is the angle of convergence of the femurs greater in females than males? 8- Where is the weakest point of the femur? 9- Where are the transverse foramina found? The articular facets? 10- What is the function of processes and spines in the vertebrae?

          1- Why is the sphenoid bone named the keystone of the cranial bones?
    2- Name the bones that articulate with the sphenoid bone, starting at the crista galli of the ethmoid bone and going in a clockwise direction.
    3- Which curves of the adult vertebral column are concave (relative to the anterior side of the body)?
    4- What is the purpose of the anatomical curvature of the vertebral column?
    5- Which parts of the humerus articulate with the radius at the elbow? With the ulna at the elbow?
    6- Fractures of the humerus may cause impairment of arm and hand movements.
    7- Why is the angle of convergence of the femurs greater in females than males?
    8- Where is the weakest point of the femur?
    9- Where are the transverse foramina found? The articular facets?
    10- What is the function of processes and spines in the vertebrae?

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Added by Dennis J.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

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Solved by Expert Madhur L

06/02/2022

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1- Why is the sphenoid bone named the keystone of the cranial bones? 2- Name the bones that articulate with the sphenoid bone, starting at the crista galli of the ethmoid bone and going in a clockwise direction. 3- Which curves of the adult vertebral column are concave (relative to the anterior side of the body)? 4- What is the purpose of the anatomical curvature of the vertebral column? 5- Which parts of the humerus articulate with the radius at the elbow? With the ulna at the elbow? 6- Fractures of the humerus may cause impairment of arm and hand movements. 7- Why is the angle of convergence of the femurs greater in females than males? 8- Where is the weakest point of the femur? 9- Where are the transverse foramina found? The articular facets? 10- What is the function of processes and spines in the vertebrae?

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Transcript

00:01 Hi, in the first part of this question we need to tell why sinoid bone is known as keystone of the cranial floor.

00:16 So let's start svinoid bone, it is a prominent irregular wedge -shaped bone present at the base of the skull.

00:36 This peanut bone has been called the keystone of the cranial floor because it is in contact with all of the other cranial bones.

01:04 Now move to the next part of this question which is about krista galli of the etymoid bone.

01:18 So, krista galley starting of the ithmary bone and going in a clockwise direction that bones articulate with sweetenite bones are frontal, varietal, temporal, occipital, temporal, orbital and frontal bones.

02:13 So let's talk about the third part of this question, which is about the curves of the adult vertebral column are the first one is the thoracic and second one is the secret curves which are concave to the anterior of the body.

02:46 Now move to the next part of this question which is about the purposes of the anatomical curvature of the vertebral.

02:59 Column.

03:01 So these curves increases the vertebral columns, strength, flexibility and ability to absorb water.

03:29 Now let's talk about the next part of this question which is about the part of the numerous known as capitulum.

03:41 It is present at the distal head of the humerus and it articulates with the radius of the forearm.

04:01 Now move to the next part of this question...

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