Exam 6: The Peripheral Nervous System: Afferent Division; Special Senses

Which of these substances is required for contraction of smooth muscle fibres?

A(n) ____________________ is a motor neuron and all the muscle fibres it recruits.

Match the types of muscles, labelled a. and b., with the characteristics. a.isometric contraction b.isotonic contraction -does not accomplish any work

Match the muscle fibre types, labelled a. through c., with the characteristics. (Options may be used more than once or not at all.) a.slow-oxidative fibre b.fast-oxidative fibre c.fast-glycolytic fibre -most readily fatigues

Which of these statements correctly describes contraction in skeletal and smooth muscle?

Why must the oxygen debt be "paid off" following rigorous muscular activity?

Match the types of muscles, labelled a. through g., with the properties in question. (Options may be used more than once or not at all.) a.skeletal muscle only b.single-unit smooth muscle only c.cardiac muscle only d.skeletal muscle and cardiac muscle e.skeletal muscle and single-unit smooth muscle f.single-unit smooth muscle and cardiac muscle g.skeletal, single-unit smooth, and cardiac muscles -Match the muscle term with the correct characteristic by using the answer codes a. through e. ____ creatine phosphate ____ myoglobin ____ glycogen ____ lactic acid ____ glucose a. a storage form of glucose used in muscle cells requiring rapid energy release b. a molecule that can quickly, but temporarily, make ATP c. an oxygen-storing protein that makes muscle tissue appear red d. a fuel molecule for cell respiration or fermentation e. fermentation product when our cells become anaerobic

The functional unit of skeletal muscle is a(n) ____________________.

The strength and rate of contraction of the heart can be influenced by the autonomic nervous system.

Fatigue is the failure of a muscle fibre to maintain which of the following as a result of previous contractile activity?

Which of these statements correctly describes myoglobin?

Match the types of muscles, labelled a. through g., with the properties in question. (Options may be used more than once or not at all.) a.skeletal muscle only b.single-unit smooth muscle only c.cardiac muscle only d.skeletal muscle and cardiac muscle e.skeletal muscle and single-unit smooth muscle f.single-unit smooth muscle and cardiac muscle g.skeletal, single-unit smooth, and cardiac muscles -innervated by the autonomic nervous system

Binding of which substance to myosin permits cross bridge of which action between actin and myosin?

____________________ refers to paralysis of the legs resulting from lower spinal cord injury.

Match the skeletal muscle proteins, labelled a. through f., with the descriptions. (Options may be used more than once or not at all.) a.actin only b.myosin only c.actin and myosin d.troponin-tropomyosin complex e.actin, troponin, and tropomyosin f.actin, myosin, troponin, and tropomyosin -found in thin filament

Muscles developing tension while lengthening are performing what type of contractions?

Which of these conditions occurs as the result of a lack of acetylcholinesterase in the synaptic cleft?

Which one of the following is the function of tropomyosin?

Fast-oxidative muscle fibres have a high concentration of mitochondria.

Myosin is considered to be a regulatory protein because it plays an important role in the regulation of muscle contraction.