Introduction to the Skeleton quiz #2 Flashcards
Introduction to the Skeleton quiz #2
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What structures anchor the chordae tendineae?
The chordae tendineae are anchored by the papillary muscles in the heart. Which of the following is not one of the ossicles? A) Malleus B) Incus C) Stapes D) Cochlea
D) Cochlea Which of the following is not part of the sternum? A) Manubrium B) Body C) Xiphoid process D) Clavicle
D) Clavicle Which foramen is a feature of the occipital bone?
The foramen magnum is a feature of the occipital bone. Which ribs are considered false ribs?
Ribs 8-12 are considered false ribs. Which of the following is not part of the ethmoid bone? A) Crista galli B) Perpendicular plate C) Superior nasal concha D) Mastoid process
D) Mastoid process Which bones form the cranium?
The cranium is formed by the frontal, parietal, temporal, occipital, sphenoid, and ethmoid bones. How many bones make up the nasal septum?
Two bones make up the nasal septum: the vomer and the perpendicular plate of the ethmoid bone. Each person has 20 sets of these bones?
Each person has 20 sets of phalanges in the hands and feet. Which of the following is not part of the vertebral column? A) Cervical vertebrae B) Thoracic vertebrae C) Lumbar vertebrae D) Clavicle
D) Clavicle What do African Homo erectus cranial features include?
African Homo erectus cranial features include a prominent brow ridge, a long and low cranial vault, and a large occipital torus. What coxal bone is the bone that we sit on?
The ischium is the coxal bone that we sit on. How many bones are typically found in the adult human skeleton, and why might this number vary?
The adult human skeleton typically has 206 bones, but this number can vary due to age, individual differences, and the presence of extra bones like sesamoid bones or additional ribs and vertebrae. What is the primary function of the axial skeleton?
The axial skeleton provides structure and protection for internal organs. Why do newborns have more bones than adults?
Newborns have more bones because many bones fuse together during growth and development to form the larger bones of the adult skeleton. What are girdles in the context of the skeleton, and what is their role?
Girdles are structures that attach the limbs to the axial skeleton; the pectoral girdle connects the arms, and the pelvic girdle connects the legs. How many bones are in the appendicular skeleton, and how does symmetry affect this number?
The appendicular skeleton has 126 bones, but since each limb has a right and left counterpart, many bones are paired. What are some practical tips for learning the bones of the skeleton?
Feeling your own bones and identifying their features can help with memorization and understanding their placement. How does the skeleton provide protection for internal organs?
The skull protects the brain, the rib cage protects the heart and lungs, and the spinal column protects the spinal cord. Why might some adults have more than 206 bones?
Some adults have extra bones due to incomplete fusion or the development of additional bones like extra ribs or vertebrae. How does the appendicular skeleton contribute to movement?
The appendicular skeleton includes the bones of the limbs and girdles, which allow for a wide range of motion and mobility. How does bone fusion affect the total number of bones in the skeleton?
Bone fusion during growth reduces the number of bones from over 300 in infants to about 206 in adults. Why is the number 206 considered an estimate for the number of bones in the adult skeleton?
Because bone number can vary due to age, individual differences, and the presence of extra or fused bones. How can feeling your own bones help in learning skeletal anatomy?
It helps you connect anatomical knowledge to your own body, making it easier to remember bone locations and features. How does the skeleton change from infancy to adulthood?
Bones fuse as a person grows, reducing the total number from over 300 in infants to about 206 in adults. Why is it not necessary to memorize the name of every individual bone in the skeleton?
Because many bones are grouped (like ribs and vertebrae), and learning the groups is sufficient for most purposes. How do the bones of the limbs connect to the axial skeleton?
The bones of the limbs connect to the axial skeleton through the pectoral and pelvic girdles.
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