00:01
What type of muscle pulls on bones? what type of muscle regulates a diameter of blood vessels? a, skeletal and cardiac.
00:08
B, smooth and cardiac.
00:11
C, skeletal and smooth.
00:13
Or d, smooth and skeletal.
00:16
Okay, so you have three types of muscle.
00:19
You have skeletal, you have smooth, and you have cardiac.
00:24
And i've grouped these up based on whether or not you have conscious control over them or not.
00:28
So skeletal muscles are voluntary.
00:30
You have control over these.
00:33
You can cause them to contract and relax, mostly at will.
00:36
And they are used for movement, and they do pull on bones.
00:41
So that's where they get the name from.
00:42
A skeletal muscle is attached to a bone.
00:46
So we can rule out b and d here, because they both have smooth as pulling on bone, and then we have the other two types.
00:54
These are the involuntary...