Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

Which of the following is likely to have the strongest leg bone?

  1. Jockey

  2. Swimmer

  3. Weight lifter

  4. Golfer
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The femur, or thigh bone, is the longest, heaviest and strongest bone in the entire human body and helps support all the body's weight. The weight lifter will therefore have the strongest leg bones.

Therefore, the correct answer is option C.

Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

Patella is a kind of

  1. Cartilage bone

  2. Membrane bone

  3. Cartilage

  4. Sesamoid bone
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A bone which is embedded in the tendon is known as sesamoid bone. Patella is a the largest sesamoid bone which articulates with the femur (thigh bone) and covers and protects the anterior articular surface of the knee joint. 

So, the correct answer is 'Sesamoid bone'.

Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

Epiphyseal disks, which are present at the ends of the long bones are responsible for

  1. Bone elongation

  2. Growth of thickness of the bone

  3. Remodelling the shape of bone

  4. Formation of Haversian system
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

At the ends of each long bone are present epiphyses which are covered with hyaline cartilage. The longitudinal growth of long bones is due to the endochondral ossification of the epiphyseal plate and is stimulated by the production of the growth hormone.
Therefore, the correct answer is option A.

Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

What is the term used for the opening or hole in a bone?

  1. Process

  2. Fossa

  3. Foramen

  4. Tubercle
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The foramen is the hole is an opening or groove in the bone that allows blood vessels and nerve to enter the bone. It i1s one of the several ovals or circular openings in the base of the skull.

So, the correct option is 'Foramen'.

Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

Total number of bones in axial skeleton of man are

  1. 206

  2. 120

  3. 406

  4. 80
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The axial skeleton is the part of the skeleton that consists of the bones of the head and trunk of a vertebrate.

It consists of 80 bones and is composed of six parts; the skull bones, the ossicles of the middle ear, the hyoid bone, the rib cage, sternum and the vertebral column.
Skull has 28 bones - 8 cranial bones, 14 facial bones and 6 ossicles of middle ear.
Hyoid is single bone.
Vertebral column consists of 26 bones - 7 cervical vertebrae, 12 thoracic vertebrae, 5 lumbar vertebrae, 1 sacrum and 1 coccyx.
Thoracic cage consists of 1 sternum and 24 ribs. 
So, the correct answer is '80'

Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

Thoracic cage in rabbit is made up of

  1. Ribs, vertebral column and diaphragm.

  2. Ribs, diaphragm and sternum.

  3. Vertebral column, diaphragm and sternum.

  4. Ribs, vertebral column and sternum.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In mammals, like rabbit and humans thoracic vertebrae, ribs and sternum together form the rib cage. In humans, the rib cage, also known as the thoracic cage, is a bony and cartilaginous structure which surrounds the thoracic cavity and supports the pectoral girdle (shoulder girdle), forming a core portion of the human skeleton. A typical human rib cage consists of 24 ribs, the sternum (with xiphoid process), costal cartilages, and the 12 thoracic vertebrae. 

Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

Scapula is a large triangular flat bone situated in the dorsal part of the thorax between

  1. The second and fifth rib

  2. The second and seventh rib

  3. The third and sixth rib

  4. The third and eighth rib

  5. The fourth and seventh rib
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The scapula is commonly referred to as the shoulder blade. It connects the humerus bone of the arm to the collarbone. It is located between the second and seventh ribs. 

Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

The number of vertebrae present in cervical, thoracic, lumbar, sacral and coccyx regions respectively in a child are

  1. 12, 7, 5, 1, 1

  2. 1, 7, 5, 12, 1

  3. 7, 5, 1, 12, 1

  4. 7, 12, 5, 5, 4

  5. 5, 12, 7, 1, 1
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Vertebral column is part of the axial skeleton. It is the flexible column extending from neck to tail.

The human vertebral column consists of 33 vertebrae. These are divided into different regions, which correspond to the curves of the spinal column. The vertebrae are numbered and divided into regions: cervical, thoracic, lumbar, sacrum, and coccyx.
Cervical: The 7 cervical vertebrae are numbered C1 to C7 in neck. Its function is to support the weight of the head.
Thoracic: The 12 thoracic vertebrae are numbered T1 to T12. Main function of the thoracic spine is to hold the rib cage and protect the heart and lungs.
Lumbar: The 5 lumbar vertebrae are numbered L1 to L5. Main function of the lumbar spine is to bear the weight of the body.
Sacrum: There are 5 sacral vertebrae, which are fused together. Main function of the sacrum is to connect the spine to the hip bones.
Coccyx: The 4 fused bones of the coccyx provide attachment for ligaments and muscles of the pelvic floor. 
Therefore the number of vertebrae present in cervical, thoracic, lumbar, sacral and coccyx regions respectively are 7, 12, 5, 5, 4.
So, the correct answer is '7,12,5,5,4.

Multiple choice biology our skeletal system and the skin bones and movements joints in the human body joints

Sacrum in human is formed by the fusion of

  1. 3 vertebrae

  2. 5 vertebrae

  3. 8 vertebrae

  4. 6 vertebrae
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The sacrum is a part of the vertebral column. It is formed by the fusion of 5 bones. It is a large, triangular bone at the base of the spine. The main function of the sacrum is to connect the spine to the hip bones (iliac). The sacrum is a very strong bone that supports the weight of the upper body as it is spread across the pelvis and into the legs. Thus, the correct answer is option A.