Axial Skeleton Flashcards
What is the axial skeleton?
The axial skeleton consists of the bones that form the long axis of the body, including the skull, vertebral column, and rib cage.
How many bones are in the adult human skull?
The adult human skull is made up of 22 bones.
True or False: The vertebral column is composed of 33 vertebrae in total.
True
What are the three main parts of the axial skeleton?
The three main parts of the axial skeleton are the skull, vertebral column, and thoracic cage (rib cage).
Fill in the blank: The _____ protects the brain.
skull
What is the function of the vertebral column?
The vertebral column protects the spinal cord and provides structural support to the body.
How many cervical vertebrae are there?
There are 7 cervical vertebrae.
What are the names of the first two cervical vertebrae?
The first two cervical vertebrae are called the atlas and the axis.
True or False: The thoracic cage consists of the ribs and the sternum.
True
How many pairs of ribs are there in the human body?
There are 12 pairs of ribs.
What type of bone is the sternum classified as?
The sternum is classified as a flat bone.
Fill in the blank: The _____ connects the ribs to the sternum.
costal cartilage
What is the total number of bones in the adult vertebral column?
The adult vertebral column typically has 26 bones.
How many lumbar vertebrae are there?
There are 5 lumbar vertebrae.
What is the sacrum?
The sacrum is a triangular bone formed by the fusion of five vertebrae at the base of the vertebral column.
True or False: The coccyx is commonly known as the tailbone.
True
What are the regions of the vertebral column?
The regions of the vertebral column are cervical, thoracic, lumbar, sacral, and coccygeal.
How many thoracic vertebrae are there?
There are 12 thoracic vertebrae.
Fill in the blank: The _____ forms the posterior part of the skull.
occipital bone
What is the function of the ribs?
The ribs protect the thoracic cavity and support the upper body.
Which bone is known as the breastbone?
The sternum is known as the breastbone.
True or False: The hyoid bone is part of the axial skeleton.
True
What is the role of the hyoid bone?
The hyoid bone supports the tongue and is involved in swallowing.
How many bones make up the nasal cavity?
The nasal cavity is formed by several bones, including the nasal bones, maxillae, and ethmoid bone.
What bones make up the zygomatic arch?
The zygomatic arch is formed by the zygomatic bone and the temporal bone.
Fill in the blank: The _____ is the only movable bone of the skull.
mandible
What is the primary function of the vertebral discs?
The primary function of the vertebral discs is to absorb shock and provide cushioning between vertebrae.
How many pairs of floating ribs are there?
There are 2 pairs of floating ribs.
True or False: The atlas supports the weight of the head.
True
What is the significance of the foramen magnum?
The foramen magnum is the opening in the skull where the spinal cord connects to the brain.
Fill in the blank: The _____ bones are located in the middle ear.
ossicles
What are the names of the three auditory ossicles?
The three auditory ossicles are the malleus, incus, and stapes.
True or False: The vertebrae are classified into two categories: true and false vertebrae.
True
How many true ribs are there?
There are 7 pairs of true ribs.
What is the term for the bony projection on the temporal bone where the mandible articulates?
The term is the mandibular fossa.
Fill in the blank: The _____ bone forms the base of the skull.
sphenoid
What is the role of the cervical vertebrae?
The cervical vertebrae support the neck and allow for a wide range of head movements.
How many bones are in the adult human cranium?
The adult human cranium is made up of 8 bones.
What is the largest bone in the human skull?
The largest bone in the human skull is the frontal bone.
True or False: The vertebral column curves to improve balance and flexibility.
True
What are the sections of the rib cage?
The rib cage is divided into the true ribs, false ribs, and floating ribs.
Fill in the blank: The _____ is the uppermost part of the sternum.
manubrium
What is the purpose of the thoracic vertebrae?
The thoracic vertebrae support the rib cage and protect the heart and lungs.
