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

Question

BlackTom AI · Accepted Answer

Let's break down what the question is asking by focusing on two key features: presence of sarcomeres (striation) and whether the muscle is involuntary.
Option 1: Smooth. Smooth muscle cells do not have sarcomeres arranged in the classic striped pattern; they are non-striated. They are generally controlled involuntarily by the autonomic nervous system, so while they are involuntary, the lack of sarcomeres makes this option incorrect for the question as stated.
Option 2: Cardiac. Cardiac muscle is unique in that it contains sarcomeres and is striated, similar to skeletal muscle, but it operates involuntarily due to pacemaker activity and autonomic regulation. This combination—sarcomeres plus involuntary control—matches exactly what the question asks for, so this option is correct.
Option 3: Skeletal. Skeletal muscles are clearly striated and contain sarcomeres, but they are under voluntary control, not involuntary. Hence this option does not satisfy the criterion of involuntary muscle, making it incorrect for this question.

SMC 2025 Spr - BIOL 3 (1286,1288) - Fundamentals of Biology (G) Quiz15HBDit (Dig, Sk/Mu)

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

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

Cardiac muscle is

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