Answer:
Syndemosis~ an immovable joint in which bones are joined by connective tissues.
Suture~ an immovable junction between two bones
Gomphosis~ Fiberous mobile peg and socket joint on roots of teeth
Synchondrosis~ immovable joint between two bones bound by a layer of cartilage
Symphysis~ a place where two bones are closely joined, creating an immovable joint or completely fused
Synostosis~ union or fusion of adjacent bones by growth
Answer:
Otitis media is generally caused by dysfunction of the Eustachian tube, which can be due to Pharyngitis.
Explanation:
The otitis media is an infection or inflammation of the middle ear and is mostly caused by the inflammation of the mucous membranes in the nasopharynx leading to dysfunction of the Eustachian tube. This can be caused due to a upper respiratory tract viral infection or streptococcal pharyngitis (strep throat) or due to some allergy.
Pharyngitis or sore throat is a type of inflammation caused by upper respiratory tract viral infection.
Therefore, Otitis media can be caused by Pharyngitis and thus it is associated with it.
Answer: A vaccine works by flowing in your blood and getting rid of the toxic or bad germs in your body.
Explanation:
Answer:
The correct option is : d. all of the above statements are true
Explanation:
The masseter is a quadrilateral-shaped thick muscle, found only in the mammals. It is one of the muscles of mastication and is particularly very strong in the herbivores, as it used to facilitate chewing plant matter.
This muscle is composed of- superficial head and deep head.
The masseter muscle arises on the zygomatic arch and on the maxillary process of the zygomatic bone.
Whereas, the muscle inserts on the angle and ramus of the mandible.
The anterior division of mandibular division (V3) of the trigeminal nerve innervates the masseter muscle.
Therefore, all of the statements given are true.
Answer: B) The number of electron in its valence shell.
Explanation:
Outermost electrons of the atoms which can participate in the chemical bond formation is known as valence electrons.
Atoms either transfer or share its valence electrons during chemical bond formation. Atoms transfer or share electrons to attain octet or in other words stability.
Generally, 8 electrons are required in their outermost shell or valence shell in order to attain stability. This rule is known as octet rule.
For example, general electronic configuration of sodium belonging to group 1 is 1s2 2s2 2p6 3s1.
No. of valence electrons in Na = 1
by loosing 1 electron, its outer shell electronic configuration become = 1s2 2s2 2p6 (Octet)
Hence, sodium and other group 1 elements are very reactive.
Similarly, halogens (ns2 np5) by gaining 1 electron attain octet (ns2 np6). Hence halogens are also very reactive.
Carbon atom belonging to group 14 has 4 valence electrons (ns2 np2) and share all 4 valence electrons to attain octet and hence reactive.
Nobel gases have octet in their outermost shell (ns2 np6), hence they are most nonreactive element.
