BGYB30H3 Lecture 16 Notes Muscles 2-Nov 3

2 Pages

Biological Sciences
Course Code
Ingrid L.Stefanovic

This preview shows 80% of the first page. Sign up to view the full 2 pages of the document.
BGYB30H3 Lecture 16 Notes -skeletal muscles attach to bones by tendons and function by positioning and moving the skeleton -somatic motor neurons cause contraction of skeletal muscles -ZlooKZ oZ L[KlZ]}L }L ]}LZ LL[K}oZ}K}LZ -smooth muscles are muscles of internal organs that influence movement of materials around, in and out of the body -primary extrinsic control of smooth muscles originates from autonomic nervous system -some smooth muscles can contract spontaneously and can be modulated by hormones -cardiac muscle is only found in the heart and pumps blood around the body -cardiac muscles can contract and relax spontaneously -primary extrinsic control of cardiac muscles also arises from the ANS -cardiac and skeletal muscles have striations only -muscles have many nuclei and mitochondria -origin of skeletal muscles is the point connected to the bone that is most stationary and closest to the trunk -insertion is the point of the muscle-bone attachment that is most mobile and distant from the trunk -flexor muscles bring bones closer together (e.g. biceps) -extensor muscles bring bones farther apart (e.g. triceps) -antagonistic muscle groups have opposite effects on one another (e.g. when bicep relaxes, triceps
More Less
Unlock Document

Only 80% of the first page are available for preview. Some parts have been intentionally blurred.

Unlock Document
You're Reading a Preview

Unlock to view full version

Unlock Document

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.