Cardiac muscle is

Question

Cardiac muscle is

BlackTom AI · Accepted Answer

Consider the question: Cardiac muscle is
Option 1: 'striated' — This is true. Cardiac muscle fibers have a striated appearance due to their organized sarcomere structure, similar to skeletal muscle, which underlies their contractile mechanism.
Option 2: 'involuntary' — This is also true. Cardiac muscle contracts without conscious control, regulated by intrinsic pacing and autonomic input, classifying it as involuntary.
Option 3: 'noncontractile' — This is incorrect. Cardiac muscle is highly contractile, enabling the heart to pump blood; describing it as noncontractile contradicts its primary function.
Option 4: 'smooth' — This is incorrect. Smooth muscle is non-striated and present in many hollow organs; cardiac muscle is distinctly striated and located in the heart, not smooth muscle.
In summary, the statement that accurately describes cardiac muscle includes its striated appearance and its involuntary control, while the notions of being noncontractile or smooth do not align with cardiac muscle physiology.

BIOL-2401-099 A&P I Exam 3 Electrically Excitable Tissues- Requires Respondus LockDown Browser

Cardiac muscle is

查看解析

登录即可查看完整答案

类似问题

The muscles of respiration are composed of Blank ______.

位置16的问题 Smooth muscle is found in internal organs.TrueFalse

Which of the following muscle groups has sarcomeres and is involuntary?

Match the structure in the body with the appropriate type of muscle it is made from. Left ventricle of the heart Cardiac muscle Oblique muscle of the stomach Smooth muscle Gluteus maximus Skeletal muscle Arrector pili Smooth muscle Zygomaticus Skeletal muscle

Which of the following muscles acts under voluntary control?

What type of muscle assists an agonist by causing a like movement or by stabilizing a joint over which an agonist acts?

Which type of muscle is voluntary?

更多留学生实用工具

考试浏览器助手

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