Answer: The cell membrane is a bilayer of lipids composed mainly of lipids and proteins.
Explanation: A cell is the functional unit of life. A cell is usually surrounded by the cell membrane. A cell is composed of different organelles such as the nucleus, mitochondria, ribosome, each also surrounded by a membrane and these organelles are suspended in the fluidy part of the cell know as the cytoplasm.
A cell membrane is a thin lining that surrounds the cell and encloses the cytoplasm. It is made up of two layers of lipids in which proteins are embedded. Cell membranes allow the selective passage of materials into and out of the cell.
Answer: Plants need animals for seed dispersal and pollination. ... Some animals eat plants. Some animals eat other animals. When animals die and decompose, the plants use the nutrients that were deposited back into the soil from the decomposing organism.
Explanation:
Answer:
somatic motor neuron hyperexcitability; inhibition
The neuronal circuitry to skeletal muscles involves neurons that stimulate contractions and those that inhibit contractions. The muscle spindles and Golgi tendon organs are involved in maintaining the proper muscle tonus (resting muscle tension); they work by signaling the CNS. Since tetanus involves SOMATIC MOTOR NEURON HYPEREXCITABILITY, the neurons involved in muscle contraction INHIBITION are affected.
Explanation:
Tetanus is a infection that is caused by a bacteria called Clostridium tetani. It occurs when open wounds in the body are not properly treated and they get infected. This wound can be caused by stepping on a nail or sharp object like broken bottle.
When tetanus enters an open wound present on the body, it attacks the neurons in the body, specifically the somatic motor neurons. Tetanus hinders the release of neurotransmitters and blocks the inhibitory properties of the muscles. These causes the muscles of the body to contract unhindered and uncontrollably resulting in spasms. This can also be referred to as neuronal hyperexcitabilty.
