Anatomy Flashcards

Which bone shapes the upper portion of the eye sockets and the forehead?

Answer: Frontal bone

The orbits, or upper portion of the eye sockets, are formed from the frontal bone.

Out of the following, which one is not an axial skeleton bone?

Answer: Humerus

One bone in the appendicular skeleton—more precisely, the upper limb—is the humerus.

Which bone articulates with the femur to create the hip joint?

Answer: Ilium

The hip joint is formed by the femur articulating with the acetabulum of the hip bone, which is made by the pubis, ischium, and ilium.

Which of these doesn't belong in the pelvic girdle?

Answer: Scapula

The pectoral girdle, not the pelvic girdle, contains the scapula.

Which side of the forearm is home to the ulna?

Answer: Medial

The forearm's medial side is home to the ulna and its lateral side to the radius.

Which muscle is involved in forearm flexion?

Answer: Biceps brachii

A strong forearm flexor at the elbow joint is the biceps brachii.

Of the following, which one is not a component of the carpus (wrist)?

Answer: Ulna

The ulna is a forearm bone, not a component of the wrist (carpus).

What is the trapezius muscle's main purpose?

Answer: Movement of the scapula

The scapula can move in many directions, such as rotation, retraction, depression, and elevation, thanks to the trapezius muscle.

What anatomical structure unites the two hemispheres of the brain?

Answer: Corpus callosum

The left and right brain hemispheres are connected by a wide band of nerve fibers called the corpus callosum, which facilitates communication between them.

What is not a cranial nerve among these?

Answer: Phrenic nerve

The diaphragm is the main structure innervated by the phrenic nerve, a spinal neuron that arises from the cervical nerves (C3–C5).

What is the pancreas' principal role?

Answer: Regulation of blood sugar levels

The hormones glucagon and insulin, which control blood sugar levels, are secreted by the pancreas.