What are myofibrils - Study guides, Class notes & Summaries

what are the major muscles and muscle groups? Where are they located Answer upper body: abdominal, pectoral, trapezius, latissimus dorsi, erector spinae, biceps, and triceps lower body: quadriceps, hamstrings, gastrocnemius, gluteus, soleus describe muscle organization from smallest to largest functional unit. Identify the components of the contractile unit. Answer the sarcoplasm is the cytoplasm of the muscle fiber hundreds of myofibrils dominate sarcoplasm. molecular level: actin ...

What are the three layers of connective tissue and the location of each? correct answers -Epimysium (outer) -Perimysium (middle) -Endomysium (inner) What do muscle fibers contain? correct answers myofibrils with contractile proteins, actin, and myosin What happens to capillary supply to muscle fibers with training? correct answers On average: 3-4 per muscle fiber For athletes: 5-7 per muscle fiber; increases with training What is a tendon? Compare it to a muscle fiber in terms of st...

Straighterline Anatomy Final, Straighterline Anatomy & Physiology Exam 2024 What is the smallest level of organization in the body that contains the body's genetic information? a. chemical b. cellular c. tissue d. organism -Answer-cellular The cellular level includes the nucleus, an organelle that contains the body's genetic information. Which is an example of a normally occurring positive-feedback mechanism? Select one: a. elevated blood pressure during exercise b. increase in hea...

How many separate bones are in the skull? - Answer- 37-38 How many cervical vertebrae do ALL mammals have? - Answer- 7 Name the 5 regions of the spinal column - Answer- Cervical - Thoracic - Lumbar- Sacral - Coccygeal Name the thoracic limb bones (from proximal to distal) - Answer- Scapula - humerus - Radius - Ulna - Carpal bones - Metacarpal bones - Phalanges Fibrous connective tissue that attaches muscle to bone - Answer- Tendon Well defined group of cells (muscle fibers) surrou...

Kinesiology Midterm Exam 2024 Questions and Answers Dependent - Answer-requiring some assistance exacerbation - Answer-increase in the severity of a disease or its symptoms Graft - Answer-tissue or organ for transplantation or implantation Hemiplegia - Answer-paralysis of one side of the body Ipsilateral - Answer-same side Contralateral - Answer-opposite side mobility - Answer-ability to move with ease orthostatic hypotension - Answer-fall in blood pressure Osteoporosis - Answer-loss o...

Biology 235 Physiology - Exam #2 Questions With Verified Answers What are the three types of muscle tissue? - answer1) Skeletal muscle 2) Cardiac muscle 3) Smooth muscle What are the characteristics of skeletal muscle? - answer- Long, cylindrical cells - Multinucleate - Striated with numerous fine bands - Voluntary - Neurogenic, it requires a nerve to stimulate it What are the characteristics of smooth muscle? - answer- Spindle shapes - Flat and unstriated - Single nucleus - Involun...

GMS 6474 Exam Questions and Answers 100% Correct Lecture 2 Muscles can either be ____ or ____? - Answer- 1. Voluntary 2. Involuntary What is one question to ask when comparing voluntary to involuntary muscles? - Answer- How is the underlying tissue metabolized? Cardiac functional syncytial vs smooth muscle functional syncytial? - Answer- Cardiac - pacemaker cells cause contractions Smooth - vasodilation/vasoconstriction True/False: Smooth muscle has striations? - Answer- FALSE! what tw...

Bio 102 Muscular System / Thomas / WVU Questions and Answers Rated A+ What are the functions of the muscular system? Movement, posture, heat production. Skeletal muscle makes up how much of body mass? 35-40% What sends the signal to muscles? Motor neurons. List the structure of skeletal muscle Bundles of fibers, fiber, myofibril, sarcomere, myosin, actin. What is the functional unit of the muscle system? Sarcomere Actin and myosin are Intracellular proteins and/or myofilament...

Biology 235 Physiology - Exam #2 Questions With Verified Answers What are the three types of muscle tissue? - answer1) Skeletal muscle 2) Cardiac muscle 3) Smooth muscle What are the characteristics of skeletal muscle? - answer- Long, cylindrical cells - Multinucleate - Striated with numerous fine bands - Voluntary - Neurogenic, it requires a nerve to stimulate it What are the characteristics of smooth muscle? - answer- Spindle shapes - Flat and unstriated - Single nucleus - Involun...

What percentage of body mass does muscle make up in women? correct answers 30-35% What percentage of body mass does muscle make up in men? correct answers 42-47% 3 Muscle Types correct answers Smooth, cardiac, skeletal Locations of smooth muscle correct answers blood vessels, respiratory tract, iris, GI tract Function of smooth muscle correct answers Alters the activity of various body parts to meet the body's needs at the time Describe smooth muscle contraction correct answers S...