Answer:
a. dilation stage
Explanation:
Dilation stage -
The phase in the pregnancy ,
Cervix is present in the bottom portion of the uterus , this area opens when the women delivers a baby via vagina , is called the process of cervical dilation .
During the process of labor , the cervix opens up to release the head of the baby , which opens up to 10 centimeters , and the process is done automatically in most of the cases .
Answer:
he nervous system consists of two major components: ... The Peripheral Nervous System (PNS), composed of all the nervous tissue outside the CNS. The PNS is represented by cranial nerves from the brain, spinal nerves from the spinal cord, and nodules known as ganglia, that contain the neuronal cell bodies.
Explanation:
Answer:
Adduction
Explanation:
Clockwise movement of the right scapula is called Adduction.
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.
