Question

30.Which of the following steps of the cell cycle does a cancer cell never enter? A. G0

B. G1 C. G2 D. M E. S

31.Which of the following abdominopelvic regions overlaps at least partly with the right lower quadrant?
A. Epigastric
B. Hypogastric

C. Left inguinal
D. Left lumbar
E. Right hypochondriac

32.Which of the following organ systems has a primary function of immunity? A. Endocrine
B. Lymphatic
C. Muscular

D. Reproductive E. Urinary

33.Which of the following structures would you expect to find in the pleural cavity? A. Atlas

B. Heart
C. Lung
D. Pubis
E. Xiphoid process

34.The region of the body that contains the fibula is also known as the A. Axilla

B. Bucca C. Crus
D. Frons E. Mamma

35.In a long bone, which of the following ossifies first? A. Diaphysis

B. Epiphyseal cartilage C. Epiphysis
D. External Callus
E. Metaphysis

36.The main blood supply in compact bone is found in A. Canaliculi

B. Central canals C. Lacunae
D. Lamellae
E. Osteocytes

37.The interosseous membrane in the leg is an example of a A. Diarthrosis
B. Synarthrosis
C. Synchondrosis

D. Syndesmosis E. Synostosis

38.When a person sprains her ankle, which of the following motions did her ankle most likely do?

A. Dorsiflexion B. Eversion
C. Inversion
D. Plantar flexion E. Retraction

39.Thick skin is most likely found on the A. Antebrachium
B. Intestinal lining
C. Knee

D. Palm E. Scalp

40.What is the major function of the arrector pili?
A. Causing hairs to stand on end
B. Holding bone to bone
C. Increasing surface area between dermis and epidermis D. Producing oil

E. Providing cushion in the spine

41. (Extra credit) Which of the following joints is biaxial? A. Atlantoaxial
B. Elbow (humero-ulnar)
C. Hip

D. Metacarpo-phalangeal joint of digit 4 E. Pubic symphysis

Answer 1

30.Correct answer is option A - G0 phase.

Explanation :

G0 PHASE :

In this phase, cells are in quiescent or inactive stage. They neither divide nor preparing to divide. Some cells enter into this phase temporarily when no more cells are needed and if the need arises cells returns back to G1 phase. Cancer cells are dividing continuously. So they don't enter into G0 phase.

This phase can be considered as an extension of G1 phase or considered as not a part of cell division cycle.

Cell cycle consists of 5 phases

a) G1 - Primary growth phase :In this phase cell maturation occurs

b) S - Synthesis phase, in which DNA replication or duplication occurs

c) G2 - Secondary growth phase :Both organelles and proteins are also synthesized in this phase.

d) M - Mitosis - division of nucleus occurs

e) C - Cytokinesis - division of cytoplasm takes place.

G1 + S + G2 phases collectively called as interphase.

31.Correct answer is option B- Hypogastric

Explanation :

Admdomen is divided into 4 quadrants and 9 regions.

Quadrants:-

Right upper quadrant, Left upper quadrant, Right lower quadrant, Left lower quadrant.

Regions:Right hypochondriac, Epigastric, Left hypochondriac - - >upper part

Rigt lumbar, Umbilical, Left lumbar - - - >middle part

Right iliac fossa,Hypogastric,Left iliac fossa- - - > inferior part

**In the right lower quadrant, right iliac fossa, some part of right lumbar region, umbilical region and hypogastric region will be present.

32. Correct answer is option B- Lymphatic system.

Explanation :

Lymphatic system is made up of lymphatic vessels, lymph nodes, lymph and lymph organs. It has an important role in immunity.They produce lymphocytes, macrophages and antibodies which act against pathogens.

Endocrine - It deals with hormones that regulate various physiological processes

Muscular system - It involves skeletal, smooth and cardiac muscles.It helps in the movement, maintaining posture and pumping blood throughout the body.

Reproductive - It deals with production of gametes and new offsprings.

Urinary - It helps in elimination of wastes, regulation of blood volume and BP, electrolyte balance and maintenance of normal pH.

33. Most appropriate answer is option C - Lung

Explanation : Pleural cavity is actually the potential space between the 2 layers of pleura. It contains the pleural fluid. It is present surrounding the lungs and helps in lubrication of lung.

**Heart lies in the mediastinum and pericardial space is present surrounding the heart.

**Xiphoid process is the inferior most part of sternum.

**Atlas is the 1st vertebra.

**Pubis is a part of pelvic bone.