The double layered sac surrounding the heart is the pericardium
Answer:
C
Explanation:
Tetrodotozin is a sodium channel blocker. that is; it prevents the opening of sodium channels in the neuron needed for depolarization and action potential production.
T<u>he voltage gated sodium channels in the nerves and skeletal muscles are blocked, action potential are not generated from these areas,Therefore potassium channels are permanently open leading to hyper polarization, and since sodium channels can not open, they remain in refractory state, this leads to muscular paralysis leading to impairments of respiratory and cardiac functions.</u>
Specifically the paralysis of the diaphragm muscles, lead to collapse of the lungs, preventing breathing,leading to suffocation and death.
This is an example of competitive inhibition;The introduction of cholinergic acetycholine neurotransmitter reverses the blockage of sodium channels
Answer:
the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.
Explanation:
Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar
Answer:
a. Unconditioned Stimulus (US) – Teacher saying jump
b. Conditioned Stimulus (CS) – Clearing the throat, saying Uhmmmm... and then banging the stick/ruler and saying jump
c. Unconditioned Response (UR) – Jumping after hearing the word “jump”
d. Conditioned Response (CR) – Jumping after hearing Uhmmmm….banging of ruler and word “jump”
Explanation:
Unconditioned response is one in which the response generated in natural while in conditioned response, response is generated in unnatural fashion.
Likewise, unconditioned stimulus is a natural causing factor behind any natural response while conditioned stimulus is an unnatural causing factor behind any unnatural response.
a. Unconditioned Stimulus (US) – Teacher saying jump
b. Conditioned Stimulus (CS) – Clearing the throat, saying Uhmmmm... and then banging the stick/ruler and saying jump
c. Unconditioned Response (UR) – Jumping after hearing the word “jump”
d. Conditioned Response (CR) – Jumping after hearing Uhmmmm….banging of ruler and word “jump”
Answer:
I think it's the first option
