True or false: Cardiac muscle is striated and involuntary.

Question

BlackTom AI · Accepted Answer

The statement to evaluate is: 'Cardiac muscle is striated and involuntary.'

Option 1: True
- This option correctly identifies two key features of cardiac muscle: it is striated, meaning its microscopic structure shows the banding pattern similar to skeletal muscle due to the arrangement of actin and myosin filaments. 
- It is also involuntary, meaning its contraction is not under conscious control; the heart’s rhythm is regulated primarily by the autonomic nervous system and intrinsic pacemaker activity, rather than voluntary effort.
- Additionally, cardiac muscle cells connect via intercalated discs, which support synchronized contraction, reinforcing why the involuntary, rhythmic beating characteristic of the heart is achieved.

Option 2: False
- This statement would be incorrect because it claims a mismatch with the true nature of cardiac muscle. If one claimed cardiac muscle were non-striated, that would apply to smooth muscle, not cardiac muscle. If one claimed cardiac muscle were voluntary, that would also be incorrect, since voluntary control is a hallmark of skeletal muscle, whereas the heart operates involuntarily.
- A faulty explanation might confuse cardiac muscle with skeletal muscle or smooth muscle, overlooking cardiac muscle’s distinct features like striation, branching cells, and intercalated discs that enable automatic, coordinated contractions.

In summary, the combination of striations and involuntary control aligns with the established understanding of cardiac muscle physiology, while any assertion denying either characteristic would be inaccurate.

True or false: Cardiac muscle is striated and involuntary. 判断题

类似问题

Question at position 2 Which of the following does not belong with the others?StriatedInvoluntaryMultinucleatedSkeletal

Which of the following characteristics distinguishes cardiac muscle from skeletal muscle?

Which of the following is TRUE?

Question at position 22 Cardiac muscle cells _____________ freely, allowing them to form a coordinated structure.contractelongatebranchfuse

Which tissue has a primary role of contraction?

Smooth muscle is

Which of the following is NOT a characteristic of skeletal muscle?

Match the descriptions on the left with the muscle types on the right. 1: Multinucleated 2: Branching fibers 3: Contains intercalated disks 4: Found in the wall of many hollow organs

更多留学生实用工具

智能学习助手

风格化写作助手

论文查重助手

文献引用助手

课堂转译助手

课堂笔记助手

Quiz搜索助手

学校历年真题

智能刷题助手

智能匹配练习

希望你的学习变得更简单