Answer:
Like the brain, the spinal cord is covered by the meninges and cushioned by cerebrospinal fluid. Spinal nerves connect the brain with the nerves in most parts of the body. Other nerves go directly from the brain to the eyes, ears, and other parts of the head.
The spinal cord is a single structure, whereas the adult brain is described in terms of four major regions: the cerebrum, the diencephalon, the brain stem, and the cerebellum.
Explanation:
The Consumer-Patient Radiation Health and Safety Act of 1981 is a federal law, that requires anyone taking radiographs be trained and certified.
Answer:
Each tooth is composed of dentine and pulp cavity.
Explanation:
Human teeth are made up of four different types of tissue: pulp, dentin, enamel, and cementum. The pulp is the innermost portion of the tooth and consists of connective tissue , nerves, and blood vessels, which nourish the tooth.By volume, 45% of dentin consists of the mineral hydroxylapatite, 33% is organic material, and 22% is water. Yellow in appearance, it greatly affects the color of a tooth due to the translucency of enamel. Dentin, which is less mineralized and less brittle than enamel, is necessary for the support of enamel.
The birth outcomes to emerge as significant correlates of co-use of Cannabis and tobacco cigarettes were small head circumference, and the occurrence of birth defects i.e. teratogenicity.
<h3>What is teratogenicity?</h3>
- Teratogenicity is the ability of a drug or chemical to cause fetal abnormalities or deformities.
- The drugs, chemicals, or even infections causing teratogenicity in fetus are called teratogens.
- Common teratogens includes some medications, recreational drugs, tobacco products, chemicals, alcohol, certain infections, and in some cases, uncontrolled health problems in the birthing parents.
- Teratogens are most harmful early in pregnancy, starting about 10 to 14 days after conception to about 8 weeks into pregnancy.
- Teratogens can cause neural tube defects such as spina bifida. Some organs are sensitive to teratogens during the whole pregnancy. This includes the brain and spinal cord of baby.
- Alcohol affects the brain and spinal cord, so it can cause harm at any time during pregnancy.
- To prevent teratogenicity avoid use of chemicals that may harm child like pesticides, fungicides, rodenticides or harsh cleaning products.
- Avoid smoking, and alcohol consumption to prevent teratogenicity.
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Answer:
1. The political unity of the Roman Empire did produce a certain economic and political stability, notwithstanding its many faults. This encouraged trade between large cities and regions
2. The military and trade routes meant relatively easy access to large numbers of people (both by land and sea). Joel Kotkin writes, ‘Rome allowed considerable self-government to individual cities; the empire itself, notes the historian Robert Lopez, functioned as a ‘confederation of urban cells.’ Europe would not again see such a proliferation of secure, and well-peopled cities until well into the nineteenth century. People, products, and ideas traveled quickly through the vast archipelago of ‘urban cells’ over secure sea-lanes and fifty-one thousand miles of paved roads stretching from Jerusalem to Boulogne…Christianity’s rapid growth could not have taken plave without the empire’s expansive urban infrastructure.’ [i]
3. The universal use of Greek as a result of former conquests aided communication
4. The cosmopolitan atmosphere of the Empire – mixed cultures – enabled easier cross-cultural evangelism e.g., Jews who were culturally Greek (Barnabus from Cyprus, Paul the Roman citizen) were able to bridge cultures
Explanation:
