Skeletal System

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The average number of bones in the adult skeleton is __________.

206

From superior to inferior, how many individual vertebrae are there of each type?

7; 12; 5; 5; 4

What is a sesamoid bone?

A bone that forms within some tendons in response to stress

Which of the following is only found on the axis vertebra?

Dens (odontoid process)

Which of the bones below does not belong to the appendicular skeleton?

Ethmoid

Which of the following bones is a single unpaired bone?

Ethmoid

Which of the following is not considered a weight-bearing bone?

Fibula

A young girl falls off her bike and lands on her hand, breaking the medial bone of her antebrachium. Which bone did she break?

Her ulna

A 72-year-old female patient with a history of mild osteoporosis is experiencing back stiffness, pain, and fatigue, especially in the thoracic region. Examination reveals pronounced rounding of the upper back. What is your diagnosis?

Hyperkyphosis

When you are sitting, your body weight rests on which of the following?

Ischial tuberosity

Which of the following is not true of a thoracic vertebra?

It has a pair of transverse foramina.

Which of the following are not considered facial bones?

Parietal bones

Which of the following is a sesamoid bone?

Patella

Which of the following is the most common spinal curvature deformity?

Scoliosis

Why does an adult not have as many bones as a child?

Some separate bones gradually fuse with age.

Which of the following sutures connects the greatest number of bones?

Squamous suture

What are the three auditory ossicles?

The malleus, incus, and stapes

Which of the following do costal cartilages connect?

The ribs with the sternum

Which of the following is not part of the pectoral girdle?

The sacroiliac joint

In a herniated disc, the ring of fibrocartilage called the __________ ruptures and the __________ oozes out.

anulus fibrosus; nucleus pulposus

The acetabulum articulates with the __________.

femur

A hole through a bone that usually allows passage for nerves and blood vessels is called a(n) _________.

foramen

The __________ is a U-shaped bone that sits above the larynx yet does not articulate with any other bone.

hyoid bone

The upper part if the hip bone is called ___________.

ilium

There are __________ bones in a newborn compared with the average number in an adult.

more

A newborn passes through the__________ of its mother during birth.

pelvic outlet

The acromion is an anatomical feature of the __________.

scapula

The glenoid cavity of the __________ articulates with the head of the __________.

scapula; humerus

The __________ houses the pituitary gland (hypophysis) and is found in the __________.

sella turcica; sphenoid bone

Fontanelle are __________ in an infant.

spaces between the unfused cranial bones

The __________ belongs to the thoracic cage, whereas the __________ belongs to the pectoral girdle.

sternum; clavicle

All the bones below belong to the axial skeleton, except the __________, which belongs to the appendicular skeleton.

sutures

Rib 7 is a __________ rib.

true rib


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