A woman who has never conceived a child is called as:

Correct Answer: C

Rationale: The correct answer is C: Nullipara. Nullipara refers to a woman who has never given birth to a child. "Nulli-" means none or zero, and "-para" refers to giving birth. This term specifically indicates the absence of any childbirth experience, regardless of pregnancy history. A: Primipara would refer to a woman who has given birth to one child. B: Nulligravida would refer to a woman who has never been pregnant. D: Primigravida would refer to a woman who is pregnant for the first time. Therefore, C is the correct choice as it accurately describes a woman who has not experienced childbirth.

Correct Answer: B

Rationale: The correct answer is B: Fossa. A fossa is a hollow cavity or depression within a bone. It serves as an attachment site for muscles, ligaments, or tendons. Sulcus (A) is a groove or furrow, not a hollow cavity in a bone. Fissure (C) is a narrow opening or cleft, not a hollow cavity. Sinus (D) is a cavity within a bone filled with air, not necessarily hollow. Therefore, the best choice for a hollow cavity within a bone is a fossa.

Correct Answer: C

Rationale: The correct answer is C: 11, 12 ribs. Floating ribs are ribs that do not have a direct attachment to the sternum. Ribs 11 and 12 are considered floating ribs because they do not attach to the sternum or cartilage of other ribs, only to the vertebrae in the back. Choices A and B are incorrect because ribs 1-10 are not considered floating ribs. Choice D is incorrect because ribs 11 and 12 are indeed the floating ribs of the thoracic cage.

Correct Answer: C

Rationale: The correct answer is C: Shoulder joint. A ball and socket joint allows for multi-directional movement with a wide range of motion. The shoulder joint fits this description as it consists of the ball-shaped head of the humerus bone fitting into the socket of the scapula bone. This anatomical structure allows for movements like flexion, extension, abduction, adduction, and rotation. In contrast, the interphalangeal joint (A) is a hinge joint, the knee joint (B) is a hinge joint, and the elbow joint (D) is a pivot joint, none of which have the same range of motion as a ball and socket joint.

Correct Answer: B

Rationale: The correct answer is B: Plantar flexion. Plantar flexion refers to the motion of extending the foot downward towards the ground, like when pointing the toes or pressing the gas pedal. This action is mainly controlled by the calf muscles, particularly the gastrocnemius and soleus. Dorsiflexion (A) is the opposite motion, where the foot is flexed upward towards the shin. Rotation (C) involves turning around an axis and is not relevant to this specific movement. Flexion (D) refers to the bending of a joint, not the extension of the foot downward. In summary, plantar flexion is the correct answer because it accurately describes the motion of extending the foot downward, while the other choices do not match the described movement.