CLASS 9TH SCIENCE NOTES Chapter - 8 MOTION
Ch-8 (motion)
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CLASS 9TH SCIENCE NOTES Chapter - 5 The fundamental unit of life
You can get the notes by click the link below CH-8 motion
Sternum : it's anatomy, upper middle and lower part
Sternum is a long flat bone. It is 15 centimetres in length. It is divided into three segments 1. Manubrium 2. Body 3. Xiphoid process Upper part manubrium It is quadrilateral in shape. It's lateral border joints with first rib pair. It's clavicular notch medial end of clavicle bone articulates. Body or middle part It lateral border forms joint with lower part of 2nd C.C. and 3rd C.C. to 6 C.C. and upper half of 7th C.C. Lower part or xiphoid process Smallest part, lower part of 7th C.C. articulates. More anatomy notes available click here
Some important questions for class 9 SCIENCE chapter - 6 TISSUE
NCERT Solutions for Class 9 Science Chapter 6 – Tissues are one of the most important topics in the CBSE exam. The faculty have curated the solutions in a lucid manner to help students understand the concepts. Q.1)WHAT IS THE DIFFERENCE BETWEEN MERISTEMATIC AND PERMANENT TISSUE? Q.2)WHAT IS CONNECTIVE TISSUE? Q.3) WHAT ARE THE LOCATION AND FUNCTIONS OF AREOLAR AND ADIPOSE TISSUE? Q.4) What is collenchyma? Explain its location and what are various functions it performs? Q.5) Define tissue. Q.6) Write differences between plant and animal tissue?
What is Volkmann's process? Etiology and severity
Volkmann's ischemic contracture is a deformity of the hands,fingers and wrist caused by injured muscles of the forearm due to any reasons maybe accident, trauma or burn. Etiology Volkmann's ischemic contracture occurs when there is a lack of blood flow usually caused by increased pressure that results from swelling (compartment syndrome). There are 3 levels of severity 1 . Mild - flexion contracture of 2 or 3 fingers only, with no or without limited loss of sensation 2. Moderate - All fingers are flexed and the thumb is stuck in the palm, the wrist may be stuck in flexion and there is usually some loss of sensation in hand. 3. Severe - All the muscles of forearm that flexes and extends the fingers and wrist are involved, a severely disabled condition.
What is poliomyelitis? How is poliomyelitis spread? What are the symptoms of poliomyelitis?
Poliomyelitis is a highly contagious and infectious disease. Also referred to as 'polio'. It is caused by a virus called poliovirus . It invades the nervous system and can cause paralysis (total) within a matter of hours. To know more Click here Get the notes of different syndrome by clicking - Volkmann's ischemic contracture