The basic unit of structure and function in the nervous system is
the neuron.
a. true
b. false
17
The endocrine system produces chemical messengers called enzymes.
a. true
b. false
18
The thyroid is a link between the nervous and endocrine systems.
a. true
b. false
19
Axons connect sensory neurons to motor neurons.
a. true
b. false
20
The parathyroids regulate the level of calcium in the blood.
a. true
b. false

Which skill, if it cannot be performed by a 3-year-old child, should alert the nurse that the child may be developmentally delayed?

What is the statement plant growth is affected by the color light

What best explains whether bromine (br) or neon (ne) is more likely to form a covalent bond? bromine forms covalent bonds because it has seven valence electrons, but neon has eight valence electrons and already fulfills the octet rule. bromine forms covalent bonds because it has many electron shells, but neon has only two electron shells and is tightly bound to its electrons. neon forms covalent bonds because it can share its valence electrons, but bromine has seven valence electrons and can gain only one more electron. neon forms covalent bonds because it has only two electron shells, but bromine has many electron shells and will lose electrons in order to fulfill the octet rule.