Answer:
I believe the answer is letter a
Explanation:
because in the late ancient times there's no hospital.
Answer: d.Arti sehat sosial
Explanation:
Social health refers to a person's ability to relate well socially in an environment. In order to do this, one needs to abide by the established norms and customs of the area they are in in relation to the social life of the area.
Social health is very important because humans are social creatures so our social health directly imparts our physical and mental health as well such that if we are socially unhealthy, we tend to be unhealthy in the other ways as well.
Answer:
A. Electron Cloud (not sure)
Explanation:
Am not sure if this is right
What is my blood pressure?
What should my blood pressure be?
What kind of diet should I follow to help control my blood pressure?
How much should I weigh?
Can you recommend a diet or eating plan to help me reach that weight?
How much exercise should I be doing?
Answer:
1. E) During muscle contraction all of the answers above are correct.
2. A) Myosin pulls actin filaments toward the M disk.
Explanation:
The mechanism of muscle contraction is also known as the sliding filament theory. It explains the activities which occur during contraction of muscles.
Muscles are made up of functional units called sarcomeres and these sarcomeres made up of myofibrils which are long and thin strands of protein. Myofibrils contain thin filaments called actin and thick filaments called myosin. Interactions between the thin and thick filaments results in contraction.
The I band contains thin filaments. The H band is the area of no thin filaments. The M line is the midline of the thick filaments. The Z line is the boundary between adjacent sarcomeres and the A band is the area of thick filaments.
Contraction occurs when muscle fibres are activated by neurons through the release of calcium ion. On stimulation, the H and I band get smaller, the zone of overlap gets larger and the Z lines move closer together and the A band remains constant. This the thin filaments slide towards the center resulting in the shortening of the sarcomeres and the muscle fibres as a whole.
