In cardiac muscle
a. an action potential spreads throughout the Z discs.
b. intercalated discs connect the muscle fibers together.
c. calcium enters the cell from storage chambers called intercalated discs.
d. potassium is released from the sarcoplasmic reticulum
Answer:
b. intercalated discs connect the muscle fibers together.
Explanation:
Intercalated discs are components of the muscles found in the heart(cardiac muscles).
Intercalated discs join the cardiomyoctes (muscle cells or fibers) together so that they can function as one and transmit signals amongst themselves during the contraction of the heart.
Intercalated discs are made of up desmosomes and gap junctions.
Intercalated discs are found on the lining of the sacromere and can only be seen by using a microscope to observe the longitudinal section of the heart tissue.
Answer:
D. increasing the number of mitochondria
Explanation:
The mitochondria are membrane-bound cellular organelles found in the cell of an eukaryote. Mitochondrion is responsible for the production of energy since the process which releases the energy (cellular respiration) occurs in it.
In an experimental procedure whereby the amount of energy which is produced by a cell is about to be increased will involve the increase of the number of mitochondria in that cell. Since more mitochondria means more energy production.
Answer:
The answer is fat, water, protein and carbohydrate.
Explanation:
Examples of nutrients include:
Carbohydrates (CHO), Lipids (fats), Proteins, Vitamins, Minerals, Water.
Answer:
Is interpreted by the brain.
Explanation:
Sensation is the ability to feel things physically. It can be defined as the process in which the brain collects information through the five sense organs( eyes, nose, skin, tongue, ears) after which the information is interpreted by the brain.
Sensory neurons are responsible for the detection of a stimulus. Neurons helps to transport the message about the stimulus to the brain or spinal cord, which then interprets the information and decides on the specific type of action to carry out.
Coriolis effect ,wind, rotation of the Earth,and shape of ocean basins
