Chapter 7.3+ Anatomy Module

24 July 2022
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manuburium
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identify the shield shaped top of the sternum. The manubrium is the superior most region of the sternum. It articulates with both the clavicle and the first rib.
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hyaline cartilage
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name the type of connective tissue that anchors the ribs onto the sternum. The costal cartilage that anchors the ribs onto the sternum is hyaline cartilage. Hyaline cartilage is the most common type of cartilage in the body.
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body
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identify the central portion of the sternum. The body of the sternum is the largest region, occupying the space between the manubrium and the xiphoid process.
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xiphoid process
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what part of the sternum is palpated prior to giving CPR? When administering CPR, care must be taken not to apply direct pressure to the xiphoid process. Injury can result from the xiphoid process being broken off and damaging vital organs found deep to it.
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7
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how many pairs of ribs articulate directly with the sternum? There are 7 pairs of true ribs in the human body. True ribs articulate directly with the sternum.
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7
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how many pairs of ribs articulate directly with the sternum? There are 7 pairs of true ribs in the human body. True ribs articulate directly with the sternum.
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5
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how many pairs of ribs are considered false ribs? 5 pairs of ribs are false ribs. False ribs either attach to the sternum indirectly by articulating with the costal cartilage of the rib above it, or do not attach to the sternum at all.
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24
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how many ribs make up the rib cage? The rib cage is composed of 12 pairs of ribs, 24 ribs in total. The 12 pairs of ribs articulate with the thoracic vertebrae posteriorly.
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head
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identify the part of a rib that articulates in the demi-facets of the thoracic vertebra. The head of a rib articulates in a region between 2 thoracic vertebrae, contacting the inferior demi-facet of the top vertebra, and the superior demi-facet of the bottom vertebra.
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tubercle
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identify the region of a rib that articultes with the transverse process of a vertebra. The tubercle of a rib is located between the neck and shaft of the rib at the proximal end of the bone. It contacts the transverse process at the transverse costal facet.
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there is little risk of physically damaging the heart.
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During cardiopulmonary resuscitation (CPR), it is important to place the compression hands over the sternal body but not over the xiphoid process so that _________. During CPR the heart is compressed between the sternum and spine. When done properly, the heart never comes into direct contact with any bony prominence that could cause severe cardiac trauma.
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it passes from the vertebral column to the sternum via its own costal cartilage.
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why is the rib at B considered true rib? True, or vertebrosternal, ribs make a complete circuit around the thoracic cage in a ring that includes their own costal cartilage.
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floating rib
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what is the most specific term you could apply to the rib at D? This is a floating rib because it does not articulate with a costal cartilage and instead terminates in the body wall.
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manubrium
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what portion of the sternum is identified by the letter A? The manubrium is the superior portion of the sternum.
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the clavicle
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which of the following bones does NOT fit with the other listed bones? The clavicle of part of the appendicular skeleton, while the vertebrae, sternum, and ribs are part of the axial skeleton.
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false
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each of the 12 ribs articulates with one vertebrae. Is the statement true or false? Each rib articulates with two separate vertebrae. The tubercle of the rib articulates with the rib facet of a thoracic vertebra on the transverse process. The head of the rib articulates with the bodies of two separate vertebrae.
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true
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costal cartilages join most ribs to the sternum
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true
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the tubercle of a rib articulates with the transverse process of a vertebra.
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true
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the term vertebrochondral ribs to ribs that attach to each other before they attach to the sternum.
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spine
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which of the following landmarks is found the posterior surface of the scapula? The spine of the scapula is on the back of the bone and can easily be palpated.
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glenoid cavity
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identify the socket of the should joint. The glenoid cavity is a round flat surface that serves as the socket of the shoulder joint. Because of its flat nature, the joint is highly moveable. It is stabilized by the rotator cuff muscles.
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acromion process
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identify the region of the scapula that articulates with the clavicle. The acromion process is the knoblike ending at the lateral end of the scapular spine. It articulates with the clavicle forming the acromioclavicular joint.
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acromion process
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which region of the scapula does articulate with another bone? The acromium articulates with the acromial end of the clavicle, forming the acromioclavicular joint.
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rotator cuff
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the scapula is the site of origin of a group of muscles that stabilize the shoulder joint. Identify this muscle group. The 4 muscles that make up the rotator cuff originate on the scapula and insert on the proximal humerus. These muscles work to stabilize the shoulder joint, working to prevent the head of the humerus from dislocating out of the glenoid fossa.
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coracoid process
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idnetify the process on the scapula that does not articulate with another bone. The coracoid process of the scapula is found on the lateral side of the bone projecting anteriorly and laterally. Pectoralis minor inserts on the coracoid process.
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collarbone
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identify the common name for the clavicle. The clavicles run horizontally across the top of the chest in the region of the collar of a shirt.
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sternum
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idnetify the bone that articulates with the clavicle medially. The medial, or sternal end of the clavicle articulates with the manubrium of the sternum.
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scapula
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identify the bone that artiulcates with the clavicle laterally. The lateral end of the clavicle articulates with the acromion process of the scapula forming the acromioclavicular joint.
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scapula
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idnetify the bone that makes up the pectoral girdle with the cavicle. Together the scapula and clavicle form the pectoral girdle, an incomplete bony ring surrounding the upper thorax.
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intramembranous ossification
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identify the specific process by which the clavicle develops. The clavicles and the cranial bones of the skull develop from a fibrous membrane. This process is known as intramembranous ossification.
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appendicular skeleton
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the clavicle belongs to which of the following areas? The bones making up the arms and legs, along with the pectoral and pelvic girdles, which anchor the limbs on to the axial skeleton make up the appendicular skeleton.
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the acromion
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which of the following is a bony articulation for the scapula? Yes, the acromion forms a joint with the clavicle.
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false
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because of its large bony connection to the thoracic bones, the pectoral girdle is very stable. Is this statement true or false? The only bony connection between the pectoral girdle and the thoracic bones is the clavicle. This makes the pectoral girdle very mobile but not very strong.
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the humerus
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which of the following bones is NOT part of pectoral girdle? The humerus is part of the upper limb.
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false
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the shallow socket of the shoulder joint restricts the movement of the humerous but does increase the stability of the joint.