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Question
Cardiac muscles are ______.
Options
hemoglobin
alkaline
diaphragm
red bone morrow
acidic
voluntary
involuntary
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Solution
Cardiac muscles are involuntary.
RELATED QUESTIONS
The diagram given below represents the human heart in one phase of its functions. Study the diagram carefully and answer the questions that follow:
- Name the phase.
- Which part of the heart is contracting in this phase? Give a reason to support your answer.
- Name the parts labelled 1 to 4.
- What type of blood flows through 2?
- State the function of the part numbered ‘5’.
- Name the membrane that covers the heart.
State the functions of blood in our body.
Name the following:
Any one vein which starts from an organ and ends in another organ besides the heart
Given diagram shows a simple diagram of the circulation of blood in a mamma showing the
main blood vessels, the heart, lungs and body tissues. The blood vessel, labelled 6, contains
deoxygenated blood and the valve leading to it has three semi-lunar pockets.
(a) Name the blood vessels and organs marked by numbers 1 to 8.
(b) What is meant by the term ‘double circulation’ of blood in mammals?
(c) what is diastole?
[There is an “error” in the diagram. According to the usual practice the pulmonary (lung)
circulation is shown upward and the systemic downward, but here it is reversed].
Put a tick mark (✓) against the correct alternative in the following statement.
The blood tastes saltish due to the dissolved.
Describe the functions of the: Heart
Write a short note on the human heart.
Complete the following sentence with appropriate word:
The membranous covering of the heart is _______.
Name the systems that carry out the different functions of the body.
The nodal tissue located in the lower left corner of right atrium is ______.
