Anatomy Ch 8

Indicate whether each statement is true or false.

1. The hyoid bone is shaped like the letter "U" and is unpaired. True 2. The hyoid bone is considered to be a facial bone because of its inferior attachment to the mandible. False 3. The hyoid bone provides an attachment point for some tongue muscles and for important neck muscles that elevate the larynx during speech or swallowing. True

indicate whether each statement is true or false.

1. The thoracic cage consists of the thoracic vertebrae, the ribs, and the sternum. True 2. The superior seven pairs of ribs are called true ribs because they directly attach to the sternum through their costal cartilages. True 3. Two of the false ribs, the eleventh and twelfth ribs, are called floating ribs because they do not have a posterior attachment to the spine. False 4. Most ribs have two articulations with the vertebrae, the head articulates with the body and the tubercle articulates with the transverse process. True

Match the following named structures in the femur with other structures with which they articulate.

Acetabulum of os coxae- Head of femur Patella-Patellar intercondylar surface of femur Tibia and fibula-Lateral epicondyle Tibia-Medial epicondyle

Which of the following structures is a part of the humerus that articulates with the head of the radius?

Capitulum

Match the description of the vertebrae with their associated region.

Cervical vertebrae-Contain transverse foramina Thoracic vertebrae-Costal facets articulate with ribs Lumbar vertebrae-Largest vertebrae

Match the rib feature with its description.

Costal groove-Marks the path of nerves and vessels Head-Articulates with vertebral bodies Tubercle-Articulates with transverse costal facet Angle-Where the shaft begins curving toward the sternum

The "soft spots" on an infant's head are caused by which of the following?

Fontanelles

The head of the femur articulates with the

acetabulum

Which of the following features is the most proximal feature of the ulna?

Olecranon

Which is a secondary curvature of the vertebral column that develops as a result of a child being able to hold up its head without support?

cervicle

In the appendicular skeleton, the pectoral girdle is made up of the __________ and the __________.

clavicle and scapula

What suture is the articulation between the frontal and parietal bones?

coronal

The prominence on the inferior side of the sternal end of the clavicle is called the

costal tuberosity

Because the scapula is directly connected to the axial skeleton, it cannot move freely across the thorax.

false

Lateral tibia articulates with the medial fibula at two small joints.

false

The appendicular skeleton consists of the parts that support and protect the head, neck, and trunk.

false

The auricular surface of the ilium has become one of the most reliable indicators for estimating age at death.

false

The lateral longitudinal arch of the foot is the highest arch, giving our foot its characteristic shape.

false

The ossicles serve as attachment sites of several muscles that control the mandible, tongue, and larynx.

false

The pelvic inlet is covered with muscles and skin, forming the body region called the perineum.

false

When the bones of the forearm are supinated (palm of the hand faces anteriorly), the radius is crossing over the ulna.

false

In the anatomical position, the radius and ulna are parallel to one another. Therefore, the forearm is in the ______ position.

supinated

Match the following phalanges terms with their appropriate definitions.

Pollex-Two phalanges comprising the thumb Phalanges-Fourteen bones present in the digits Proximal Phalanx-Articulates with metacarpals Distal Phalanx-Bones in the tip of the fingers

Which of the following is not a function of the vertebral column?

Provide support for the muscles of the arm

Which fossa on the humerus articulates with the head of the radius?

Radial fossa

During development, the limb bones are formed from

lateral plate mesoderm.

Match the following arches of the foot with their descriptions.

longitudinal arch-Between little toe and heel Medial longitudinal arch-Highest arch; gives foot its shape Transverse arch-Smallest arch

Which is a secondary curvature of the vertebral column that develops as a child begins to stand and walk?

lumbar

Which of the following is not a cranial bone?

mandible

The __________cranial fossa ranges from the posterior edge of the lesser wings of the sphenoid bone (anteriorly) to the anterior region of the petrous part of the temporal bone (posteriorly). It houses the temporal lobes of the brain and the pituitary gland.

middle

The ____ is the border between the true and false pelvis.

pelvic inlet

the ____ part of each limb forms first.

proximal

A middle phalanx is not present in the thumb.

true

Fontanelles in the infant's skull permit some bone movement, enabling the infant to pass more easily through the birth canal.

true

Primary ossification centers begin to form in limb bones during week 8 of development.

true

The hallux is the most medial digit of the foot and is referred to as the "great toe."

true

The patella is a sesamoid bone housed within the quadriceps femoris muscle tendon.

true

The sternum consists of the manubrium, body, and xiphoid process.

true

The upper limbs are more mobile but less stable as compared to the lower limbs.

true

The pelvic organs are enclosed within the

true pelvis.

Ribs that join the sternum directly by costal cartilages are called

true ribs

the talus, calcaneus, navicular, cuboid, lateral, intermediate, and cuneiform bones are all part of the

foot

The hip bones include the

ilium, ischium, and pubis.

The femur

is the longest bone in the body. extends from the hip to the knee. has a large, rounded head. articulates with the patella. All of these are correct. THIS ONE