Appendicular Skeleton
Consists of the clavicles (collarbones) and scapulae (shoulder blades).
Pectoral Girdle?
This upper jawbone holds your top teeth in place."
What is maxilla?
When you breathe in, this specific group of superficial rib muscles contracts to lift and expand your thoracic cage up and outward.
What are the external intercostals?
The specific directional movement initiated by the supraspinatus muscle when it lifts your upper arm laterally away from the center of the body.
What is abduction?
As the only member of the quadriceps group that crosses two joints, this straight-running muscle flexes the hip and extends the knee.
What is the rectus femoris?
Formed by the hip bones (ilium, ischium, and pubis) which anchor the lower limbs.
Pelvic Girdle?
Sandwiched between the thoracic region and the sacrum, a healthy human spine contains this exact number of large, weight-bearing lumbar vertebrae.
What is five?
Divided vertically by the linea alba and horizontally by tendinous bands, this long, flat abdominal muscle is famously responsible for creating a 'six-pack'.
What is the rectus abdominis?
Sitting directly deep to the biceps brachii, this powerhouse muscle is considered the true 'workhorse' of elbow flexion.
What is the brachialis?
Forming the bulk of the buttocks, this massive muscle is the primary extensor of the hip joint, powerfully driving your thigh backward when running or climbing stairs
What is the gluteus maximus?
Found at the elbow, it is this specific type of rotary joint that allows your forearm to twist, flip your palm upward, and turn it back down.
What is a pivot joint?
CPR instructors warn students to place their hands carefully to avoid snapping off this small, sword-shaped cartilage tip at the very bottom of the sternum.
What is the xiphoid process?
Named after its attachment points on the breastbone, collarbone, and skull, this prominent neck muscle lets you rotate your head or bow it forward.
What is the sternocleidomastoid?
When using magnetic powder, this key advantage helps reduce the risk of smudging latent prints compared to traditional brush methods.
What is the lack of direct contact with the surface (since the magnetic wand suspends the powder without bristles)?
Named after the Latin word for 'slender', this long, strap-like muscle runs down the inner thigh to adduct the hip and flex the knee joint.
What is the gracilis?
Unlike its neighbor the tibia, this thin, lateral lower leg bone carries virtually no body weight.
What is the fibula?
Derived from Latin roots for 'vertebrae' and 'cartilage', this is the scientific term for rib pairs 8 through 10, which connect indirectly to the breastbone.
What are vertebrochondral ribs? (Also accept: What are false ribs?)
Named for its saw-toothed appearance, this deep muscle pulls the scapula forward around the thorax, earning it the nickname the 'boxer's muscle'.
What is the serratus anterior?
Occupying the entire posterior compartment of the upper arm, this three-headed muscle serves as the primary extensor of the elbow joint.
What is the triceps brachii?
Located directly deep to the gastrocnemius, this flat, wide calf muscle causes ankle extension.
What is the soleus?
The Greek philosopher Aristotle first applied this name to the finger and toe bones because their orderly, multi-row arrangement reminded him of a tightly packed military line of battle.
What are phalanges? (Also accept: What is a phalanx?)
Taking its title from a Greek word meaning 'yoke', this prominent cheekbone joins with a nearby temporal process to form a bony bridge across the side of your face.
What is the zygomatic bone?
This large, kite-shaped back muscle works overtime to keep the heads of bored anatomy students upright during long, unengaging slide lectures.
What is the trapezius?
Named for its location on the thumb side of the forearm, this superficial muscle acts to flex the wrist and abduct the hand at the wrist joint.
What is the Flexor Carpi Radialis?
This prominent, two-headed superficial muscle forms the bulk of the calf and works with the soleus to pull the heel upward during ankle extension.
What is the gastrocnemius?