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 bio-chemistry coordination in life processes digestive system - organs process of digestion coordination in the process of digestion

The gastric mill is the part of the stomach that is used for

  1. Storage

  2. Digestion

  3. Excretion

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

    The gizzard also referred to as the ventriculus, gastric mill, and gigerium is an organ found in the digestive tract of some animals, including crocodiles, alligators, dinosaurs, birds, earthworms, some fish, and some crustaceans.  This specialized stomach is constructed of thick muscular walls used for grinding up food. In certain insects and molluscs, the gizzard features chitinous plates or teeth. Hence, the gastric mill is the part of the stomach that is used for grinding.

    So, the correct answer is 'grinding'.

     

    Multiple choice bio-chemistry digestion digestive system - organs process of digestion coordination in the process of digestion

    Partially digested food in ruminants is

    1. Chyme

    2. Cud

    3. Bolus

    4. All of the above
    Reveal answer Fill a bubble to check yourself
    B Correct answer
    Explanation

    Ruminants are mammals that are able to acquire nutrients from plant-based food by fermenting it in a specialized stomach prior to digestion, principally through bacterial actions. The process typically requires the fermented cud to be regurgitated and chewed again. The process of re chewing the cud to further break down plant matter and stimulate digestion is called rumination. Thus, option B is correct. Chyme is the semifluid mass of partly digested food that is expelled by the stomach into the duodenum and moves through the intestines during digestion. Bolus is a small rounded mass of a substance, especially of chewed food at the moment of swallowing. 

    Multiple choice bio-chemistry digestion digestive system - organs process of digestion coordination in the process of digestion

    Which of the following forms the inner lining of the mouth?

    1. Pleura

    2. Mucous membrane

    3. Pericardium

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

    The alimentary canal begins with an anterior opening the mouth, and it opens out posteriorly through the anus. The mouth leads to the buccal cavity or oral cavity. The oral cavity has 32 teeth and a muscular tongue. The buccal cavity is lined with mucous membrane, whose secretions keep mouth moist.

    Multiple choice bio-chemistry digestion digestive system - organs process of digestion coordination in the process of digestion

    The structure, which prevents entry of food into wind pipe during swallowing in mammals is

    1. Larynx

    2. Glottis

    3. Epiglottis

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

    The oral cavity leads into a short pharynx, which serves as a common passage for food and air. The oesophagus and the trachea (wind pipe) open into the pharynx. A cartilaginous flap, called as epiglottis, prevents the entry of food into the glottis opening of the wind pipe during swallowing.

    Multiple choice bio-chemistry digestion digestive system - organs process of digestion coordination in the process of digestion

    Pharynx is the short tube leading to the stomach

    1. True

    2. False
    Reveal answer Fill a bubble to check yourself
    A Correct answer
    Explanation

    The pharynx is an organ found in vertebrates and invertebrates. In humans, the pharynx is a part of the digestive system and also of the conducting zone of the respiratory system. The conducting zone includes nose, larynx, trachea, bronchi and bronchioles and their function is to filter, warm and moisten air and conduct it into the lungs.
    Therefore, the correct answer is option A.

    Multiple choice bio-chemistry digestion digestive system - organs process of digestion coordination in the process of digestion

    The accessory organs in the digestive system are

    1. Tongue, Pancreas, Liver, Gallbladder and Salivary glands

    2. Tongue, Pancreas, Small intestine, Gallbladder and Salivary glands

    3. Tongue, Small intestine , Large intestine, Gallbladder and Salivary glands

    4. None of the above
    Reveal answer Fill a bubble to check yourself
    A Correct answer
    Explanation

    An organ that helps with digestion but is not part of the digestive tract. The accessory digestive organs are the tongue, salivary glands, pancreas, liver, and gallbladder. Chemical digestion in the small intestine relies on the activities of three accessory digestive organs the liver, pancreas, and gallbladder. The digestive role of the liver is to produce bile and export it to the duodenum. The gallbladder primarily stores, concentrates, and releases bile. The pancreas produces pancreatic juice, which contains digestive enzymes and bicarbonate ions, and delivers it to the duodenum.

    Multiple choice bio-chemistry digestion digestive system - organs process of digestion coordination in the process of digestion

    Pharyngeal tonsils are

    1. Near surface of tongue

    2. At the back of throat

    3. Active throughout life

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

    Adenoids, also called Pharyngeal tonsils, a mass of lymphatic tissue, similar to the tonsils, that is attached to the back wall of the nasal pharynx (i.e., the upper part of the throat opening into the nasal cavity proper). An individual fold of such nasopharyngeal lymphatic tissue is called an adenoid.

    So, the correct option is 'Adenoids'.

    Multiple choice bio-chemistry digestion digestive glands liver pancreas

    Crypts of Lieberkuhn are present in.

    1. Stomach

    2. Intestine

    3. Pancreas

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

    Crypts of Lieberkuhn are tubular glands located in the epithelial lining of the small and large intestine. They are not found in the stomach, pancreas, or liver.

    Multiple choice bio-chemistry digestion digestive glands liver pancreas

    Stratum lucidum has a shinig substance called.

    1. Luciferin

    2. Eleidin

    3. Cardiolipin

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

    Stratum lucidum is a thin, clear layer of the epidermis found in thick skin. It contains the protein eleidin, which is an intermediate form of keratin that gives the layer its shiny appearance.

    Multiple choice bio-chemistry digestion digestive glands liver pancreas

    Crypts of Lieberkuhn are found in.

    1. Rectum

    2. Stomach

    3. Small intestine

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

    Crypts of Lieberkuhn are found in the small intestine, specifically between the villi, where they play a role in cell renewal and secretion.

    Multiple choice bio-chemistry digestion digestive glands liver pancreas

    Paneth cells are found in 

    1. Crypts of Lieberkuhn

    2. Peyers patches

    3. Islet of Langerhans

    4. Gastric glands
    Reveal answer Fill a bubble to check yourself
    A Correct answer
    Explanation

    Paneth cells are specialized secretory cells located at the base of the Crypts of Lieberkuhn in the small intestine.

    Multiple choice bio-chemistry digestion digestive glands liver pancreas

    Crypts of Lieberkuhn are.

    1. Simple tubular glands

    2. Coiled-tubular glands

    3. Compound tubular glands

    4. Simple alveolar glands
    Reveal answer Fill a bubble to check yourself
    A Correct answer
    Explanation

    Crypts of Lieberkuhn are simple tubular glands that extend into the lamina propria of the small intestine.

    Multiple choice bio-chemistry digestion digestive glands liver pancreas

    Valves of Kerckring occur in

    1. Between right auricle right ventricle

    2. Left auricle and left ventricle

    3. Stomach and duodenum

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

    Valves of Kerckring, also known as plicae circulares, are large circular folds of the mucosa and submucosa found in the small intestine to increase surface area for absorption.