Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
BSC 105 Muscles
| Question | Answer |
|---|---|
| what are the 4 characteristics of muscle contraction? | Contractility,excitability,extensibility, elasticty |
| What is the most superficial layer of tissue? | Fascia |
| What do muscles produce? | Heat |
| What is loose connective tissue surrounded by? | Perimysium |
| What is fiber surrounded? | A connective tissue sheath called Endomysium |
| What is skeletal muscle surrounded by? | Epimysium |
| What are the two major kinds of protein fibers? | Actin Myofilaments and Myosin myofilaments |
| What are muscle cells? | Muscle fibers |
| What is the charge difference across the membrane called? | resting membrane potential |
| What is the brief reversal back of the charge called? | Action Potential |
| Define Motor neurons | they are nerve cells that carry action potentials to skeletal muscle fibers |
| What is a single motor neuron and all the skeletal muscle fibers it innervates? | Motor Unit |
| What is anterior thigh muscle? | Quadriceps femoris |
| What is posterior thigh muscle? | Hamstrings |
| What is a tetany? | where the muscle remains contracted without relaxing |
| Buttocks | Gluteus Maximus |
| Chest Muscle | Pectoral Muscle |
| Back Muscle | Latissimus dorsl |
| Closes the eyelid | orbicular ocull |
| Puckers the mouth | orbicular Oris |
| Flattens the cheek | Buccinator |
| Adenosine triphosohate | ATP |
| What are the 4 pairs of mastication muscles? | 2 pair of pterygoids, temporalis,masseter |
| Occipitofrontalis | Raise of the eyebrows |
| Orbicularis oculi | Closes the eyelids and causes “crows feet” |
| Orbicularis Oris | Puckers the lips |
| Zygomaticus | Smiling muscle |
| Levator labii superioris | Sneering |
| Depressor Angelo oris | Frowning |
| Intrinsic tongue muscles | Change the shape of the tongue |
| Extrinsic tongue muscles | Move the tongue |
| Trapezius | Rotates scapula |
| Serrated Anterior | Pulls Scapula anteriorly |
| Pectoralis major | Addicted and flexes the arm |
| Latissmus dorsi | Medially rotates, adduced, and powerfully extends the arm |
| Deltoid | Attaches the humerus to the scapula and clavicle and is the major abductor of the upper limb |
| Triceps brachii | Extends the forearm |
| Biceps brachii | Flexes the forearm. occupies the anterior compartment of the arm |
| Brachialis | Flexes forearm |
| Brachioradialis | Flexes and supinates forearm |
| Retinaculum | Strong band of fibrous connective tissue that covers the flexor and extensor tendons and holds them in place |
| Flexor carpi | Flexes the wrist |
| Extensor carpi | Extends the wrist |
| Flexor digitorum | Flexes the fingers |
| Extensor digitorum | Extends the finger |
| 19 hand muscles | Intrinsic hand muscles |
| Quadriceps femoris | Extends the leg |
| Gastrocnemius and Soleus | Form the calf muscle |
| The lateral muscle of the leg | Peroneus |
| 20 muscles in the foot | Intrinsic foot muscles |
| The tendinous area of the abdominal wall | Linea alba |
| On each side of the linea alba | Rectus abdominis |
| Cross the rectus abdominus at three mor locations | Tendinous inscriptions |
| The muscles of the anterior abdominal wall flex and rotate the vertebral column | Abdominal wall muscles |
| Muscles located between the metacarpals | interossi mucsles |
| Hip muscles and common injection site | Gluteus medius |
| Sartorius | Tailors the muscle and flexes the thigh |
| The lateral muscles of the leg | Peroneus |
| The charge difference across the membrane | Testing membrane potential |
| Each presynaptic terminal contains | Synaptic vesicles |
| Synaptic vessels secrete a nuerotransmitter called | Acetylcholine |
| Muscle twitch | A contraction of an entire muscle in response to a stimulus |
| The time between application of a stimulus to a motor neuron and the beginning of a contraction is called | The lag phase |
| The increase in number of motor units being activated is called | Recruitment |
| The ability of skeletal muscle to shorten with force | Contractility |
| The ability to be stretched | Extensibilty |
| The capacity of skeletal muscle to respond to a stimulus | Excitability |
| Ability to recoil their original resting length after they have been stretched | Elasticity |
| The cytoplasm of each fiber is filled with | Myofibrils |
| The brief reversal back of the charge is called | Action potential |
| The charge difference across the membrane is called | Resting membrane potential |
| What extends the length of the myosin | The A band |
| What line is an attachment site for actin | Z line |
| What’s the all or none response | A muscle fiber will not respond to stimulus until that stimulus reaches threshold |
| The time of contraction is the | Contracting phase |
| The time during which the muscle relaxes | The relaxation phase |
Created by:
gracieperdue
Popular Anatomy sets