Locomotion and Movement
Test 3

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which muscle type is responsible for the movement of the heart?

Skeletal muscle
Smooth muscle
Cardiac muscle
Visceral muscle
3

Cardiac muscle is an involuntary, striated muscle responsible for heart contractions.

Which of the following is NOT a function of the human skeletal system?

Protection of internal organs
Blood cell production
Hormone secretion
Support and movement
3

The skeletal system provides support, protection, and blood cell formation but does not secrete hormones.

Which of the following pairs is correctly matched?

Hinge joint - Shoulder
Ball and socket joint - Hip
Gliding joint - Elbow
Pivot joint - Wrist
2

The hip joint is a ball-and-socket joint, allowing multi-directional movement.

Which of the following statements about muscle contraction is incorrect?

Myosin heads contain ATPase activity.
Actin filaments slide over myosin filaments during contraction.
Calcium ions are stored in the sarcolemma.
Tropomyosin blocks the active sites on actin in a resting state.
3

Calcium ions are stored in the sarcoplasmic reticulum, not the sarcolemma.

Which of the following is a correct statement about the vertebral column?

It consists of 24 vertebrae in total.
The sacrum is composed of 5 fused vertebrae.
The thoracic region consists of 5 vertebrae.
The coccyx is made of a single vertebra.
2

The sacrum is composed of five fused vertebrae, whereas the vertebral column has 26 vertebrae in total.

Which of the following statements about the skeletal system is incorrect?

The human skeleton has 206 bones.
The pectoral girdle consists of the clavicle and scapula.
The pelvic girdle is composed of three bones per side: ilium, ischium, and pubis.
The ribs are part of the appendicular skeleton.
4

The ribs are part of the axial skeleton, not the appendicular skeleton.

Which of the following joints is correctly matched with its type?

Pivot joint - Between femur and tibia
Ball and socket joint - Between humerus and scapula
Hinge joint - Between atlas and axis
Gliding joint - Between femur and acetabulum
2

The ball and socket joint is correctly matched with the humerus and scapula, forming the shoulder joint.

What is the total number of bones in an adult human skeleton?

200
206
212
220
2

The adult human skeletal system consists of 206 bones.

Which muscle fiber type is rich in myoglobin and mitochondria?

Red muscle fibers
White muscle fibers
Smooth muscle fibers
Fast-twitch muscle fibers
1

Red muscle fibers contain a high amount of myoglobin and mitochondria, making them suited for aerobic respiration.

Which structure connects bones to other bones?

Tendons
Ligaments
Cartilage
Fascia
2

Ligaments are strong connective tissues that connect bones to each other.

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