Exercise 8 Review Sheet the Axial Skeleton Vertebrae Ribsm Sternum Hyoid Answers

Overview

Your axial skeleton is made up of bones in your head, neck, back and chest. — Fabricated up of the basic in your head, neck, back and chest, your axial skeleton supports and cushions your brain, spinal cord and organs in your trunk.

What is the axial skeleton?

The adult homo body has 206 basic. These bones are divided into two main parts: Your appendicular skeleton and your axial skeleton. Your axial skeleton is made up of the bones along your vertical axis. Axial comes from the word "centrality," which means line. The bones line up forth the key cadre of your torso.

What's the difference between the axial and appendicular skeleton?

Your axial skeleton is fabricated up of the bones in your caput, neck, back and chest. Your appendicular skeleton is fabricated up of everything else — the bones that attach (append) to your centric skeleton. Your appendicular skeleton includes the bones in your shoulders, pelvis and limbs, including your arms, hands, legs and feet.

Role

What is the major function of the axial skeleton?

Your axial skeleton provides support and cushioning for your brain, spinal cord and organs in your body. Muscles in your body that move your caput, neck and trunk attach to your axial skeleton. These muscles aid you breathe and steady parts of your appendicular skeleton.

Anatomy

How many bones are in the axial skeleton?

Your axial skeleton is made up of 80 bones.

What are the five parts of the axial skeleton?

The 5 parts of your axial skeleton include the bones in your skull, ossicles (small bones) of your eye ear, hyoid os of your neck, vertebra (bones of your spine) and thoracic cage (ribcage).

Which bones belong to the centric skeleton?

The axial skeleton includes basic in your skull, ears, cervix, back and ribcage:

Skull

Your skull has two sets of bones: Eight cranial bones and 14 facial bones. The cranial bones make upwardly the pinnacle and back of your skull and back up and protect your brain. The eight cranial basic include:

Two parietal bones (left and right).
Two temporal bones (left and correct).
One frontal bone.
One occipital bone.
One ethmoid bone.
One sphenoid os.

The facial bones make up the face of your skull and course an archway to your trunk. The xiv facial basic include:

Two maxilla bones (left and right).
Two zygomatic bones (left and right).
One mandible bone.
Ii nasal bones (left and right).
Two palatine bones (left and right).
Two nasal concha basic (left and right).
Two lacrimal bones (left and right).
One vomer bone.

Ears

The auditory ossicles (small bones) of your middle ear are the smallest bones in your body. These tiny bones transfer vibrations from your eardrum to your inner ear. The centre ear bones include:

Two malleus bones (ane in each ear).
2 incus basic (one in each ear).
Two stapes bones (i in each ear).

Neck

The hyoid bone is a horseshoe-shaped bone that sits at the forepart of your cervix. Muscles and ligaments hold it in place between your jaw os and thyroid. Your hyoid os helps you breathe, speak and swallow.

Back

The vertebral column, or spine, includes 24 vertebrae plus your sacrum and your tailbone (coccyx). The vertebral column extends from the base of your skull to your pelvis. Information technology'southward grouped into v sections:

7 cervical vertebrae: These bones form your neck and back up your head.
12 thoracic vertebrae: These bones form the rear anchor of your ribcage.
Five lumbar vertebrae: These basic back up about of your trunk'due south weight and attach to your back muscles.
Sacrum: The sacrum is a triangular os that forms the dorsum wall of your pelvis.
Coccyx (tailbone): The coccyx sits at the lesser of your spine and connects to many muscles in your body.

Ribcage

The thoracic muzzle, or ribcage, protects your center, lungs and other organs. It attaches to muscles involved with breathing and arm move. The bones in your ribcage include:

Sternum (breastbone): This is a long, flat os that runs downwards the heart of your breast.
24 ribs: Most people have 12 pairs of ribs.

Conditions and Disorders

What weather condition can affect the centric skeleton?

Many conditions can cause problems with your axial skeleton. Some develop due to clothing and tear as you age. Others happen every bit a result of affliction or injury. Conditions that may touch your axial skeleton include:

Ankylosing spondylitis: Ankylosing spondylitis is a type of arthritis that causes long-term (chronic) spine inflammation and lower dorsum pain.
Axial spondylometaphyseal dysplasia: Axial spondylometaphyseal dysplasia is a genetic os growth disorder that causes shortened summit (stature).
Fibrous dysplasia: Fibrous dysplasia causes bones to break easily because fibrous, os-similar tissue replaces normal, salubrious bone.
Fractures: Bones lose their density as yous age, and less-dense basic can lead to broken bones.
Melorheostosis: Melorheostosis is a rare disease that causes the outer layers of your bones to thicken or widen.
Osteoporosis: Osteoporosis is a affliction that can lead to fragile, brittle bones if you lot don't get enough calcium.
Paget's disease of the os: Paget's affliction of the bone is a disorder that causes your bones to abound larger and weaker than normal.

Care

How tin I keep my axial skeleton healthy?

The best way to take care of your axial skeleton is to maintain a healthy lifestyle. To continue your bones stiff and healthy:

Do: Cardio and strength training can both help strengthen your bones.
Sleep: Go at least seven hours of sleep each nighttime so your bones can recover and rebuild overnight.
Maintain a healthy weight: Backlog weight can put too much pressure on your bones.
Go plenty of calcium and vitamin D: Consume milk, yogurt and almonds to go along your bones potent.
Don't smoke: Smoking decreases acceptable blood flow, which your bones need to stay healthy.
See your healthcare provider regularly: If you lot're over 65, ask your healthcare provider most taking a bone density test.

A annotation from Cleveland Clinic

Your centric skeleton is made up of the eighty basic within the key core of your body. This includes bones in your caput, neck, back and chest. Your centric skeleton protects and cushions your brain, spinal string and organs. Many different wellness conditions can affect your axial skeleton, so information technology's important to keep it healthy and stiff. By maintaining a healthy lifestyle, you should be able to lower your overall risk for disease and injury. Past taking good care of yourself, you lot'll be able to protect your bones and so they tin keep protecting you.

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Source: https://my.clevelandclinic.org/health/body/22344-axial-skeleton