Human A&P 2nd 9 Weeks

what are the main jobs of the muscular system?

Body Movement, Body Shape, and Body Heat

which type of muscle makes up the heart

cardiac

these muscles are controlled by autonomic muscle system and are involuntary

smooth

which type of muscle cells are striated? Non striated?

skeletal

a band of tough, inelastic fibrous tissue that connects a muscle with its bony attachment

tendon

Muscles that extend or straighten a body part

extensor

These muscles work to close a joint

flexor

These are striated muscles

skeletal and cardiac

This type of muscle tissue is located in the walls of hallow internal structures such as stomach, blood vessels, and airways

smooth

Define the characteristics of smooth muscle tissues

non striated

A muscle fascicle is a bundle of

muscle fibers

the connective tissue wrapping around a muscle that is continuous with tendons is the

epimysium

What is the area called where the actin and myosin filaments overlap?

A Band

where is the sarcomere located?

Z line to Z line

what are some common characteristics of muscles

excitability, contractility, extensibility, elasticity

describes the ability of a muscle to respond to a stimulus such as a nerve impulse

excitability

describe the ability of muscles to contract and cause movement

contractibility

describes the ability of a muscle to be stretched

extensibility

describes the muscle that allows the muscle to return to its original shape after it has contracted or stretched

elasticity

these are special muscles that open and close to control the passage of substance, They can be found in the walls of the anus, urethra, and mouth

sphincters

We can maintain our posture and hold our heads up due to those muscles being in a constant state of partial contraction. This is called

Muscle Tone

Muscle fatigue is caused by a build up of _______ caused by vigorous exercise

lactic acid

Levi wore a cast on his leg for 12 weeks. When it was finally removed, he took a few steps and then fell down. What is the most likely explanation for this?

Astrophy

Which muscle in the arm is responsible for abduction of the arm and also serves as an injection site.

Deltoid

Which muscle moves the ribs for breathing

Inner Costals

Which muscle extends the thigh and serves as an injection site?

Gluteus Maximus

This muscular valve prevents gastric juices from flowing back out of the stomach and into the esophagus

Cardiac Sphincter

parotid, submandibular, sublingual

Salivary Glands

papillae refers to the projections on the

Tongue

The membrane holds the coils of the small intestine together

Mesentry

The appendix is attached directly to the

Cecum

Following the sections of the large intestine, as material passes from the transverse colon, what section does it enter next?

Descending

Bile is responsible for breaking down what?

fat

The part of the stomach that lies above the esophagus is the?

Fundus

The last section of small intestine before it connects to the large intestine is the?

illium

The cystic duct and hepatic duct join to form the ________ before entering the duodenum.

common bile duct

What structure connects the tongue to the floor of the mouth

frenuluem

What digestive enzyme can be found in the mouth

amylase

The top of the tooth is called the

crown

the front teeth are called

incisors

What are the folds inside the stomach called

rugae

Once food enters the colon, what path does it take?

ascending, transverse, descending, sigmoid, rectum

What is the function of the pancreas?

break down sugar

What membrane covers the organs of the digestive system like a curtain?

great omentum

The flora of the large intestine is composed of what?

Bacteria

The main function of the large intestine is to

Reabsorb water

The two basic components of blood are

cells and plasma

White blood cells are also called

leukocytes (?)

The body's ability to form a scab comes mostly from what part of the blood?

platelets

Blood cells are not able to divide. They are formed in the?

bone marrow