Biology

Animal Tissue and Anatomy

1,715 Questions

Test your knowledge of animal tissues and anatomical structures with these practice questions. The set covers human organs, reproductive systems, and sensory receptors. These fundamental biology topics frequently appear in medical and competitive examinations.

Sensory receptorsReproductive organsBody structure frameworkEar drum pressureExcretory system

Animal Tissue and Anatomy Questions

Multiple choice

The uterus opens into the vagina through

  1. urethra

  2. ureter

  3. cervix

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

It is a part of the female reproductive system. It is present between the uterus and vagina. Therefore, the correct answer is cervix.

Multiple choice

Identify the vestigial organ(s) in humans.

  1. Vermiform appendix

  2. Nictitating membrane

  3. Wisdom teeth

  4. Erector pili

  5. All of the above
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Vestigial organs have lost all or most of their original function through evolution.

Multiple choice

Prepuce and fourchette are formed by

  1. anterior and posterior fusion of labia minora

  2. anterior and posterior fusion of labia majora

  3. posterior and anterior fusion of labia majora

  4. posterior and anterior fusion of labia minora

  5. clitoris
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Labia minora fuses anteriorly to form a skin fold called perpuce in front of small erectile organ, the clitoris. Labia minora also fuse posteriorly to form a membranous fold, called fourchette.

Multiple choice

All of the following structures are present in the pterygomandibular space except _________.

  1. nerve to mylohyoid

  2. chorda tympani nerve

  3. long buccal nerve

  4. nerve to medial pterygoid
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  1. Buccal nerve, also known as the buccinator nerve and the long buccal nerve, usually passes between the two heads of lateral pterygoid to reach the external surface of that muscle.
    1. It then follows the inferior part of the temporal muscle and emerges under the anterior border of the masseter muscle continuing in an anterolateral direction.
    2. At level of the occlusal plane of the mandibular 3rd/2nd molar, it crosses in front of the anterior border of the ramus and enters the cheek through the buccinators muscle.
    3. It is recommended that, therefore, during IAN injection, it is better to give separate long buccal nerve injection.
    4. Better option is 'a' since all other nerves are there in pterygomandibular space.
Multiple choice

In performing an elective tracheostomy, the trachea should be entered __________.

  1. below the cricoid

  2. above the cricoid

  3. through the cricothyroid membrane

  4. laterally below the thyroid cartilage
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Two principles must be adhered to, for entrance into the trachea. 1) the cricoid cartilage and 1st tracheal ring must never be cut/ injured. 2) the incision into the trachea must not extend below the fourth tracheal ring. Therefore 2nd and 3rd tracheal rings are ideal site for tracheostomy.