All humans have skeletons and so do all animals. Answer: The functions of the cranial nerves are sensory, motor, or both: Sensory cranial nerves help a person to see, smell, and hear. It is an unconscious automatic and involuntary response. Specimens required […] In anatomy, the temporomandibular joints (TMJ) are the two joints connecting the jawbone to the skull.It is a bilateral synovial articulation between the temporal bone of the skull above and the mandible below; it is from these bones that its name is derived. (ii) The contraction of muscular walls also cause to break down comparative large food pieces into smaller pieces to expose larger surface of food for the action of gastric enzymes. (a) Name the cranial and facial bones and compare and contrast the functions of the cranial and facial skeletons. Where it is synthesized. (Foreign 2008) Cranial bones: parietal, temporal, frontal, occipital, sphenoid, and ethmoid. (ii) Axon. Answer: In addition to the bones that form the skull, 14 facial bones attach to the front of the skull. See figure (a) on previous page. State the structural and the functional unit of the nervous system. In multicellular organisms the cells must communicate for the proper functioning of the body. Like the cerebral cortex, the cerebellum is comprised of white matter and a thin, outer layer of densely folded gray matter. (ii) Name a gland associated with brain. Question 6. (a) Draw the structure of a neuron and label the following on it: Nucleus, Dendrite cell body and Axon. This helps the cells to grow longer on the side of the shoot which is away from light in shady area. We have received your request successfully. Human Brain Structure and Functions: Based on their placement in the front, middle or back areas of skull, the human brain can be divided into three major parts, namely, forebrain, midbrain and hindbrain. (ii) Dendrite acquires the information Practise Frank Solutions for ICSE Class 10 Biology Chapter 9 Nervous System to prepare well for your ICSE board exam. Question 10. The trigeminal nerve is the largest of your cranial nerves and has both sensory and motor functions.. Cranial bones: parietal, temporal, frontal, occipital, sphenoid, and ethmoid. (i) Auxin Draw its neat labelled diagram and write two functions. The growth and development, cellular reproduction, tissue repair, sensing pain etc., are possible due to this cell communication. (i) increased sugar level in blood (b) Name the hormone secreted by thyroid. gravity. The skeleton plays an extremely important role in the structure of the body of a human being or animal. Question 2. The skull or known as the cranium in the medical world is a bone structure of the head. (i) Promotes growth-Auxin Three types of bones form one’s rib cage: the sternum, ribs and thoracic vertebrae. Continued ... Dementia: A decline in cognitive function resulting from death or malfunction of nerve cells in the brain. (b) The communication of cells in multicellular organisms happen by cell to cell signaling. Hormones perform the function of chemical messengers. Cranial nerves are basically named according to their structure and functions. This is part of the human anatomy pages about the nervous system. Control and Coordination Class 10 Important Questions with Answers Science Chapter 7 ... Identify the gland that secretes it and mention the function of this hormone. Answer: The iodine is required for the functioning of the thyroid gland and the major source of iodine intake for our body is through the iodized salt the deficiency of which may lead to goiter. (b) Name two main parts of hind brain and state the functions of each. Question 4. Different countries have a different way of selecting candidates like in India, top leaders choose. (iii) Abscisic acid Bones have many functions, including the following: Support: Bones provide a framework for the attachment of muscles and other tissues. (AI 2008) Question 15. Answer: Question 17. The main functions of each cranial nerves are motor and sensory. Cranial fossae are three depressions in the floor of the cranium. The cranial nerve functions are broken up into managing different aspects of your body’s daily tasks from chewing and biting to motor function, hearing, sense of smell, and vision. Mon to Sat - 10 AM to 7 PM Answer: Neurons receive signals from a sense organ. The stimulus is light and the movement of shoot is towards light. Five functions of political parties: 1. Question 9. Question 8. In your Anatomy & Physiology class or other health related classes, you will be required to know the order, function, and location of the cranial nerves. (i) Where information is acquired. In the given diagram of human brain label A and B and write their function. It regulates the growth of the body. Also mention the digestive enzymes secreted by this organ with one function of each. (a) Geotropism: Movement of roots towards the earth. The hard skull covers the meninges. (ii) Negative phototropism: Roots growing away from light towards ground. (iii) Positive geotropism Human skeleton - Human skeleton - Axial and visceral skeleton: The cranium—the part of the skull that encloses the brain—is sometimes called the braincase, but its intimate relation to the sense organs for sight, sound, smell, and taste and to other structures makes such a designation somewhat misleading. Activity to show that light and gravity changes the direction of plant growth. Answer: These are some of the things we were able to cover in class this past semester, and with the finals around the corner, there is a need to revise adequately. Olfactory receptors are located in Olfactory lobe of fore-brain. (c) Name the master gland present in the brain. This makes the fetal cranium look large compared to the facial bone area. Which problem is caused due to the deficiency of the hormone released by this gland? Steps involved in reflex action, Question 14. Phototropism: The movement of plant towards the light is called phototropism. (b) Thyroid secretes thyroxin. Define reflex action. Question 5. You are very important to us. (v) dwarfism Offered for classes 6-12, LearnNext is a popular self-learning solution for students who strive for excellence. Describe the steps involved in a reflex action. Question 8. Question 7. The rib cage protects vital organs, such as the heart and lungs. What is credit ? (Foreign 2009) Finally, inferences concerning the biological mechanism of subsistence-driven differences in skull morphology tend to favor phenotypic plasticity over natural selection (9, 10, 48 ⇓ –50). What is synapse? The names and major functions of these nerves are listed below. Answer: (CBSE 2014) (CBSE 2009) The cranial vault denotes the top, sides, front, and back of the cranium. Distinguish between voluntary and involuntary actions of our body. Ovaries in females produces hormone oestrogen. (b) A-Pons-It regulates respiration salivation, heart beat. Name the hormone secreted by thyroid. (AI 2008) Occurrence: The plants at its root tip consists of auxin which helps in the growth of a plant and the plant moves towards the light. The skeleton is the structure that contains all the bones in a human body. The dense fibrous tissue that connects the sutures is made mostly out of collagen. Backbone . Answer: Parts of the Skeletal System (Source: Britannica) The skeletal system is made up of bones and cartilage. (a) (i) Phototropism: Movement of plant in response to light. (v) Hydrotropism: Roots growing towards the source of water. This consists of 1 mark Questions, 3 Mark Numericals Questions, 5 Marks Numerical Questions and previous year questions from Human Eye and Colourful World Chapter. (ii) Abscisic acid: It inhibits the growth, responsible for wilting of leaves. (CBSE 2015) Answer: The impulse passes through spinal cord where it gets transmitted through relay neuron and it passes further through motor neuron to the effector organ i.e., muscles. Answer: The nervous system controls and coordinates all the functions in the body. Explain the cause of shoots of the plant bending towards light. (CBSE 2008) The adult skull has a total of 22 individual bones. Some of these functions include directing sense and motor impulses, equilibrium control, eye movement and vision, hearing, respiration, swallowing, smelling, facial sensation, and tasting. (ii) The function of the part marked ‘10’, the iris, is to regulate the amount of light that enters the eye so that too much light does not damage the delicate cells of the retina. (CBSE 2012) Answer: Question. (CBSE 2013) Free PDF download of NCERT Solutions for Class 10 Science (Biology) Chapter 7 - Control and Coordination solved by Expert Teachers as per NCERT (CBSE) Book guidelines. (b) Give one example of a plant growth promoter and a plant growth inhibitor. Explain how the time and amount of secretion of this hormone is regulated in human system. Nastic movement: It is a non-directional movement, e.g. Answer: Answer: Nerve cell takes the stimulus, converts it into electrical signal and passes it through sensory nerve. State one function of each of the following hormone Movement in human leg. (iii) Through which part does the information travel? Their functions are: Question 6. Iodine from the iodised salt is absorbed in our body which helps in the formation of thyroxin hormone secreted by thyroid gland. Cranial bones: parietal, temporal, frontal, occipital, sphenoid, and ethmoid. The brain is protected by the skull, the nerves are protected by the spinal column, the rib cage provides protection to the heart and lungs. (a) (i) A – Dendrite, B – axon Question 1. The main functions of the bladder are to store urine that is produced by the kidneys and excrete it from the body. The cerebellum is the area of the hindbrain that controls movement coordination, balance, equilibrium and muscle tone. (AI 2009) (i) where information is Geotropism: When a plant pot is tilted and watered the root grows towards the gravity and shoot grows away from the gravity as shown in the figure (b) on previous page. Neurons send signals to a muscle or a gland. Answer: Central nervous system a)Brain b)Spinal cord Brain It is the highest coordinating centre in the body. (CBSE 2015) Function . The trigeminal nerve has three divisions, which … It is synthesized at the tip of the plant stem. The nerves are numbered in … Call our LearnNext Expert on 1800 419 1234 (tollfree) OR submit details below for a call back. Participate in learning and knowledge sharing. Smita’s father has been advised by a doctor to reduce his sugar intake. Pituitary gland secretes a growth hormone. Draw neat diagram of human brain and label on it the following parts: Name the cranial and facial bones and compare and contrast the functions of the cranial and facial skeletons. Cerebellum in hind-brain controls the posture and balance of the body. The skull is formed of several bones which, with the exception of the mandible, are joined together by sutures—synarthrodial (immovable) joints. It from the brain the cerebellum is comprised of white matter and a thin, outer layer of densely gray... Body and axon we are benefiting from formal sour email from credit c ) name Hormones... 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